Properties of the Number -665858

Six Hundred Sixty-Five Thousand Eight Hundred Fifty-Eight

Basics

Value: -665859 → -665858 → -665857

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 38

Digital Root: 2

Palindrome: No

Factorization: 2 × 577 ²

Divisors: 1, 2, 577, 1154, 332929, 665858

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100010100100000010

Octal: -2424402

Duodecimal: -281402

Hexadecimal: -a2902

Square: 443366876164

Square Root: 816.0012254892758

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

Expansion of (1+2·x-2·x³-3·x²)/((x-1)*(x+1)*(x²+2·x-1)). A100828

A modified Engel expansion for 4·sqrt(2) - 5. A220336

Twice A024537. A182780

Consider the sequence of circles C0, C1, C2, C3 ..., where C0 is a half-circle of radius 1. C1 is the largest circle that fits into C0 and has radius 1/2. C(n+1) is the largest circle that fits inside C0 but outside C(n), etc. Sequence gives the curvatures (reciprocals of the radii) of the circles. A99938