Properties of the Number 23661

Twenty-Three Thousand Six Hundred Sixty-One

Basics

Value: 23660 → 23661 → 23662

Parity: odd

Prime: No

Previous Prime: 23633

Next Prime: 23663

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11 × 239

Divisors: 1, 3, 9, 11, 33, 99, 239, 717, 2151, 2629

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110001101101

Octal: 56155

Duodecimal: 11839

Hexadecimal: 5c6d

Square: 559842921

Square Root: 153.82132491953124

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

Consider all Pythagorean triples (X,X+1,Z) ordered by increasing Z; sequence gives X+1 values. A46090

a(n) = floor( a(n-1)/(sqrt(2) - 1) ), with a(0) = 1. A24537

Pell oblongs. A84159

Expansion of g.f. x/(1 - x - 3·x² - x³). A97076

Number of partitions of n where the difference between consecutive parts is at most 4. A238864

Divisors of 10¹⁴ - 1. A106305

T(n,k)=Number of nXk nonnegative integer arrays with each row and column increasing from zero by 0, 1, 2 or 3. A202924

a(n) = 9800·n²-5740·n-4059. A118061

a(n) = 6·a(n-1) - a(n-2) - 2 with n>1, a(0)=0, a(1)=1. A182435