Properties of the Number 23665

Twenty-Three Thousand Six Hundred Sixty-Five

Basics

Value: 23664 → 23665 → 23666

Parity: odd

Prime: No

Previous Prime: 23663

Next Prime: 23669

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 4733

Divisors: 1, 5, 4733, 23665

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110001110001

Octal: 56161

Duodecimal: 11841

Hexadecimal: 5c71

Square: 560032225

Square Root: 153.83432646844463

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of Motzkin paths of length n with no peaks at level 1. A89372

Number of 4k+3 integers in range [2ⁿ, 2ⁿ⁺¹] whose Jacobi-vector is not a valid Motzkin-path (A095101). A95091

Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges in which the leftmost leaf is at level k. A101409

Numbers k such that (7·10^2k+1 - 18·10^k - 7)/9 is prime. A183180

Total number of binary digits in the partitions of n into odd parts. A319142

Numbers k such that k! has a palindromic prime number of digits. A35067

Number of trisubstituted alkanes C_n H_2n-1 X₂ Y with n carbon atoms. A135142

Numbers k such that k and k² use only the digits 0, 2, 3, 5 and 6. A136888

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 121", based on the 5-celled von Neumann neighborhood. A270208

Triangle read by rows: T(n,k) is number of Motzkin paths of length n having k peaks at height 1. A97611