7654
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 11880
- Proper Divisor Sum (Aliquot Sum)
- 4226
- 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
- 3696
- Möbius Function
- -1
- Radical
- 7654
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 83
- 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
- a(n) = (5*n+1)*(5*n+4).at n=17A001545
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RUT = RUB-10 R4[B4Si32O72] starting from a T1 atom.at n=12A019234
- Numbers k such that the continued fraction for sqrt(k) has period 82.at n=16A020421
- Convolution of A023532 and Fibonacci numbers.at n=18A023596
- n written in fractional base 8/7.at n=28A024649
- a(n) = Sum_{k=0..2n} (k+1) * A027052(n, k).at n=7A027075
- Molien series for complete weight enumerator of self-dual code over GF(5).at n=33A028344
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 86.at n=16A031584
- Numbers whose set of base-9 digits is {1,4}.at n=37A032821
- Concatenation of prime factors of n is a cube.at n=5A038841
- Base-7 palindromes that start with 3.at n=25A043017
- Numbers having three 4's in base 9.at n=33A043471
- Numbers whose base-3 representation contains exactly one 0 and no 2's.at n=29A044994
- Engel expansion of 1/e = 0.367879... .at n=43A059193
- Quotient of LCM of prime(n+1)-1 and prime(n)-1 and GCD of the same two numbers.at n=39A083555
- Number of lattice points on or inside the rectangle formed by [1 <= x <= (q-1)/2] and [1 <= y <= (p-1)/2], where p = n-th prime, q = (n-1)-st prime.at n=38A087427
- Number of ways associated with A088959.at n=22A088111
- Smallest available integer which fits into the repeating pattern 9876543210.at n=39A098756
- Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n then a(n) is the trace of M(n)^(-6).at n=9A114358
- Number of decimal digits in Delannoy[10^n].at n=4A114470