Properties of the Number 63981

Sixty-Three Thousand Nine Hundred Eighty-One

Basics

Value: 63980 → 63981 → 63982

Parity: odd

Prime: No

Previous Prime: 63977

Next Prime: 63997

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7109

Divisors: 1, 3, 9, 7109, 21327, 63981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111100111101101

Octal: 174755

Duodecimal: 31039

Hexadecimal: f9ed

Square: 4093568361

Square Root: 252.94465797877606

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

Starts of runs of at least 3 consecutive odd numbers whose prime factors are all prime-indexed primes. A357168

Numbers n such that t(n) = σ(n) - n, where t(n) = A008472(n+1) - A008472(n). A63981