Properties of the Number 77991

Seventy-Seven Thousand Nine Hundred Ninety-One

Basics

Value: 77990 → 77991 → 77992

Parity: odd

Prime: No

Previous Prime: 77983

Next Prime: 77999

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 25997

Divisors: 1, 3, 25997, 77991

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000010100111

Octal: 230247

Duodecimal: 39173

Hexadecimal: 130a7

Square: 6082596081

Square Root: 279.26868782590003

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

a(n) is the smallest unused number such that the RMS (Root Mean Square) of a(1) through a(n) is an integer. A141391

Expansion of 1/(1+2·x+2·x²-2·x³). A77991