7754
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 11634
- Proper Divisor Sum (Aliquot Sum)
- 3880
- 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
- 3876
- Möbius Function
- 1
- Radical
- 7754
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
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
- 52
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- Number of asymmetrical planar partitions of n: planar partitions (A000219) that when regarded as 3-D objects have no symmetry.at n=18A000785
- Numbers k such that the continued fraction for sqrt(k) has period 31.at n=30A020370
- T(n,1) + T(n,2) + ... T(n,n), where T is the array in A026098.at n=22A026101
- Number of cubefree words of length n on two letters.at n=21A028445
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 7.at n=21A031420
- Numbers n such that 167*2^n-1 is prime.at n=21A050835
- Length of period of the continued fraction expansion of sqrt(2^n+1).at n=23A059926
- Inscribe two circles of curvature 2 inside a circle of curvature -1. Sequence gives curvatures of the smallest circles that can be sequentially inscribed in such a diagram.at n=10A060790
- Length of period of continued fraction expansion of square root of (2^(2n+1)+1).at n=11A061682
- Number of structurally isomeric homologs with molecular formula C_{3+n} H_{6+2n}.at n=11A063832
- Integer part of the logarithmic integral of the logarithmic integral of 10^n.at n=5A096353
- Integers k such that 10^k - 29 is a prime number.at n=14A108330
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (-1, 1, 1), (1, -1, -1), (1, 1, 0)}.at n=8A149154
- Number of n X 6 binary arrays without the pattern 0 1 diagonally, vertically or antidiagonally.at n=32A188863
- Number of n X 2 0..3 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.at n=25A201975
- Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = n+2.at n=32A210374
- Smallest number with n as least nonnegative primitive root, or 0 if no such number exists.at n=37A214158
- Semiprimes whose decimal representation has only digits in {4,5,7}.at n=34A217124
- Numbers n such that n, p=prime(n) and q=prime(p) have the same sum of digits.at n=12A261142
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 158", based on the 5-celled von Neumann neighborhood.at n=27A270335