Properties of the Number -261633

Two Hundred Sixty-One Thousand Six Hundred Thirty-Three

Basics

Value: -261634 → -261633 → -261632

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 87211

Divisors: 1, 3, 87211, 261633

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111111111000000001

Octal: -777001

Duodecimal: -1074A9

Hexadecimal: -3fe01

Square: 68451826689

Square Root: 511.5007331373045

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) = ∑_{d divides n} (-1)^{d + n/d} * d⁹. A321565

Numbers k such that k³ divides 8^k² + 1. A128681

a(n) = 4ⁿ - 2ⁿ + 1. A20515

Cyclotomic polynomials at x=8. A19326

Cyclotomic polynomials at x=-2. A20501

a(n) = n⁶ - n³ + 1. A60891

a(0) = 1; a(n) = ∑_{k=0..floor((n-1)/4)} binomial(n-1,4·k) * a(k). A352066

a(n) = (lcm_k=0..n (2^k + 1))/(lcm_k=0..n-1 (2^k + 1)). A66845

Triangular array read by rows: row s contains integers of the form (2^s+1)/(2^r+1) in order of increasing r <= s-1. A79665

Sylvester-Jacobsthal cyclotomic numbers. A105603