8658
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 27
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 20748
- Proper Divisor Sum (Aliquot Sum)
- 12090
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2592
- Möbius Function
- 0
- Radical
- 2886
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 4
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 52
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Number of partitions into non-integral powers.at n=37A000148
- Denominators of continued fraction convergents to sqrt(10).at n=6A005668
- Powers of fifth root of 17 rounded down.at n=16A018162
- Powers of fifth root of 17 rounded to nearest integer.at n=16A018163
- 6th Fibonacci polynomial evaluated at x=n!.at n=3A020552
- Appending a digit to n^2 gives another perfect square.at n=18A031150
- Denominators of continued fraction convergents to sqrt(250).at n=7A041469
- a(n) = 6*n^2 + 12*n.at n=36A067726
- Nonprimes which terminate in their sum of prime factors.at n=30A071173
- Table by antidiagonals of T(n,k) = n*T(n,k-1) + T(n,k-2) starting with T(n,1) = 1.at n=60A073133
- Sums of (one or more distinct) k-perfect numbers.at n=42A083865
- a(n) = 38*a(n-1) - a(n-2), with a(0)=0, a(1)=6.at n=3A084070
- Denominators of the continued fraction n + 1/(n + 1/...) [n times].at n=5A084844
- Sum of first n perfect numbers.at n=3A092336
- Triangle, read by rows, T(n, k) = Fibonacci(n, k), where Fibonacci(n, x) is the Fibonacci polynomial.at n=27A117715
- Triangle generated from Pell polynomials.at n=50A118243
- a(n) = Fibonacci(6, n).at n=6A124152
- Numbers k such that the sum of the first k primes is prime and the sum of the squares of the first k primes is also prime.at n=41A124225
- Number of ways tiling a 2 X n rectangle with 2 X 1 (domino) and 3 X 1 (tromino) tiles.at n=14A129682
- Binomial transform of A126568, second binomial transform of A026641.at n=6A133158