Properties of the Number -656909

Six Hundred Fifty-Six Thousand Nine Hundred Nine

Basics

Value: -656910 → -656909 → -656908

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 11 ² × 61 × 89

Divisors: 1, 11, 61, 89, 121, 671, 979, 5429, 7381, 10769

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10100000011000001101

Octal: -2403015

Duodecimal: -2781A5

Hexadecimal: -a060d

Square: 431529434281

Square Root: 810.4992288707004

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)² - a(n-1) - 1, a(0)=6. A144746

a(n) = Re(b(n)) where b(n)=(1+i)*b(n-1)+b(n-2), with b(1)=0, b(2)=1. A143056

Numerators of continued fraction convergents to sqrt(805). A42552

a(n) = (p_n + 1)*q_n - 1; where (p_n, q_n) is the n-th twin prime pair. A328493