Properties of the Number -644761

Six Hundred Forty-Four Thousand Seven Hundred Sixty-One

Basics

Value: -644762 → -644761 → -644760

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 13 × 49597

Divisors: 1, 13, 49597, 644761

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011101011010011001

Octal: -2353231

Duodecimal: -271161

Hexadecimal: -9d699

Square: 415716747121

Square Root: 802.9701115234614

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) = a(n-1) + a(n-5); a(0) = ... = a(4) = 1. A3520

Expansion of 1/(1 - x - 2·x³ - x⁵). A193147

Number of compositions of 5·n into parts 1 and 5. A369836