Properties of the Number -639331

Six Hundred Thirty-Nine Thousand Three Hundred Thirty-One

Basics

Value: -639332 → -639331 → -639330

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 11 × 19 ² × 23

Divisors: 1, 7, 11, 19, 23, 77, 133, 161, 209, 253

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: -10011100000101100011

Octal: -2340543

Duodecimal: -269B97

Hexadecimal: -9c163

Square: 408744127561

Square Root: 799.5817656750309

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) = (n+1)*binomial(n+5, 5). A27810

a(n) = denominator of r(n): r(n) is such that the continued fraction (of rational terms) [r(1);r(2),...,r(n)] = n², for every positive integer n. A128561