Properties of the Number -640625

Six Hundred Forty Thousand Six Hundred Twenty-Five

Basics

Value: -640626 → -640625 → -640624

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ⁶ × 41

Divisors: 1, 5, 25, 41, 125, 205, 625, 1025, 3125, 5125

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011100011001110001

Octal: -2343161

Duodecimal: -26A895

Hexadecimal: -9c671

Square: 410400390625

Square Root: 800.3905296791061

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

Hypotenuses for which there exist exactly 19 distinct integer triangles. A290505

Numbers k such that k | 4^k + 1. A15950

Numbers that are the sum of 2 nonzero squares in exactly 7 ways. A25290

Numbers that are the sum of 2 distinct nonzero squares in exactly 7 ways. A25308

Value of y for solution of 5ⁿ = x² + y² with closest·and y (n >= 0, 0 <= x < y). A236572

Numbers k that divide 4^k + 1, k not a power of 5. A15974