Properties of the Number -664575

Six Hundred Sixty-Four Thousand Five Hundred Seventy-Five

Basics

Value: -664576 → -664575 → -664574

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 8861

Divisors: 1, 3, 5, 15, 25, 75, 8861, 26583, 44305, 132915

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100010001111111111

Octal: -2421777

Duodecimal: -280713

Hexadecimal: -a23ff

Square: 441659930625

Square Root: 815.2146956477171

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) = ∑_k=0..n C(n-k, floor(k/2)). A97333

Expansion of (1+x)(1+x²)/(1-x-x³). A3410

Expansion of (1 - x²)/(1 - x - x³). A58278

Positions of the positive integers in the ordering of rational numbers as generated by the rules: 1 is in S, and if nonzero·is in S, then x+1 and -1/x are in S. (See Comments.) A226136

Expansion of (1-x)/(1-x-2·x²-x³). A78007

Number of new rationals produced at the n-th iteration by applying the map t -> {t+1, -1/t} to nonzero terms, starting with S[0] = {1}. A226275