66481 (number)
66,481 (sixtysix thousand four hundred eightyone) is an odd fivedigits composite number following 66480 and preceding 66482. In scientific notation, it is written as 6.6481 × 10^{4}. The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors. There are 62,964 positive integers (up to 66481) that are relatively prime to 66481.
Basic properties
 Is Prime? No
 Number parity Odd
 Number length 5
 Sum of Digits 25
 Digital Root 7
Name
Short name  66 thousand 481 

Full name  sixtysix thousand four hundred eightyone 
Notation
Scientific notation  6.6481 × 10^{4} 

Engineering notation  66.481 × 10^{3} 
Prime Factorization of 66481
Prime Factorization 19 × 3499
Composite numberω(n)  Distinct Factors  2  Total number of distinct prime factors 

Ω(n)  Total Factors  2  Total number of prime factors 
rad(n)  Radical  66481  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 66,481 is 19 × 3499. Since it has a total of 2 prime factors, 66,481 is a composite number.
Divisors of 66481
4 divisors
τ(n)  Total Divisors  4  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  70000  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  3519  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  17500  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  257.83909711291  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  3.7989142857143  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 66,481 can be divided by 4 positive divisors (out of which 0 are even, and 4 are odd). The sum of these divisors (counting 66,481) is 70,000, the average is 17,500.
Other Arithmetic Functions (n = 66481)
φ(n)  Euler Totient  62964  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  10494  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 6628  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 62,964 positive integers (less than 66,481) that are coprime with 66,481. And there are approximately 6,628 prime numbers less than or equal to 66,481.
Divisibility of 66481
m  2  3  4  5  6  7  8  9 

n mod m  1  1  1  1  1  2  1  7 
66,481 is not divisible by any number less than or equal to 9.
Classification of 66481
By Arithmetic functions
 Arithmetic
 Semiprime
 Deficient
Expressible via specific sums
 Polite
 Nonhypotenuse
By Powers
 Square Free
Other numbers
 LucasCarmichael
Base conversion (66481)
Base  System  Value 

2  Binary  10000001110110001 
3  Ternary  10101012021 
4  Quaternary  100032301 
5  Quinary  4111411 
6  Senary  1231441 
8  Octal  201661 
10  Decimal  66481 
12  Duodecimal  32581 
16  Hexadecimal  103b1 
20  Vigesimal  8641 
36  Base36  1fap 
Basic calculations (n = 66481)
Multiplication
n×yn×2  132962 

n×3  199443 
n×4  265924 
n×5  332405 
Division
n÷yn÷2  33240.500 

n÷3  22160.333 
n÷4  16620.250 
n÷5  13296.200 
Exponentiation
n^{y}n^{2}  4419723361 

n^{3}  293827628762641 
n^{4}  19533954587769136321 
n^{5}  1298636834949479951756401 
Nth Root
^{y}√n^{2}√n  257.83909711291 

^{3}√n  40.510336232914 
^{4}√n  16.057368934944 
^{5}√n  9.2159372425096 
66481 as geometric shapes
Circle
Radius = nDiameter  132962 

Circumference  417712.44240661 
Area  13884970441.817 
Sphere
Radius = nVolume  1.2307822932566E+15 

Surface area  55539881767.267 
Circumference  417712.44240661 
Square
Length = nPerimeter  265924 

Area  4419723361 
Diagonal  94018.331840126 
Cube
Length = nSurface area  26518340166 

Volume  293827628762641 
Space diagonal  115148.46973799 
Equilateral Triangle
Length = nPerimeter  199443 

Area  1913796354.1628 
Altitude  57574.234868993 
Triangular Pyramid
Length = nSurface area  7655185416.6511 

Volume  34627918133004 
Height  54281.509196656 
Cryptographic Hash Functions
md5  83124abf8693f2b66a9b605da4969967 

sha1  94a542031fc73d3b9b5dc5b9df1974e327641583 
sha256  8a60975dbdedd54d8b81a43a9ebd2b59811fc599b7a9233f427d026294096e2c 
sha512  4eeebf0f35b2f9fbe08eea5a2bbefa94be5444ef5567b38c220d02f2ec93386680daeaa88fd4d3818e80af5ebb401105b2c729250ce39f2e9fce42115060778e 
ripemd160  a0cfb9802a3260a1c103963efdf282912339ab54 