8630
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 15552
- Proper Divisor Sum (Aliquot Sum)
- 6922
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3448
- Möbius Function
- -1
- Radical
- 8630
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 127
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- 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
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MFI = ZSM-5 Nan[AlnSi96-nO192] starting with a T2 atom.at n=12A019159
- Numbers in which 0,1,2,3,4,5 all occur in base 6.at n=11A031947
- Digitally balanced numbers in base 6: equal numbers of 0's, 1's, ..., 5's.at n=11A049357
- Number of n-digit numbers with nonzero multiplicative digital root 3.at n=5A051814
- McKay-Thompson series of class 34a for the Monster group.at n=37A058639
- Array described in A062704 read by diagonals in direction of creation.at n=39A062705
- The array of A062704 read by diagonals in the 'up' direction.at n=41A062706
- Numbers k such that prime(k) + prime(k+1)*2 is a square.at n=18A064504
- a(n) = floor(e^n mod n^e).at n=32A066433
- Sums of (one or more distinct) k-perfect numbers.at n=40A083865
- Right half of periodic part of decimal expansion of 1/p for those primes having a periodic part of even length.at n=10A087002
- The arithmetic mean of the n-th and (n+1)-st cubes, rounded down.at n=20A147656
- Positions of zeros in A165582.at n=41A165583
- Sums of distinct perfect numbers.at n=13A185351
- Number of n X 1 0..2 arrays with every element value z a city block distance of exactly z from another element value z.at n=12A209469
- Number of idempotent 3X3 0..n matrices.at n=24A222822
- Related to Pisano periods: numbers n such that there are n+10 distinct Fibonacci numbers mod n.at n=26A229467
- a(n) = 7*n^2 + 2*n - 15.at n=34A239796
- Number of ways of placing n balls into boxes 1,2,... in such a way that any two adjacent boxes contain at least 4 balls.at n=17A257666
- Indices of the primitive friendly pairs in the sequence of friendly pairs (A050973, A050972) ordered by smallest maximal element.at n=53A263118