Properties of the Number -866

Eight Hundred Sixty-Six

Basics

Value: -867 → -866 → -865

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 433

Divisors: 1, 2, 433, 866

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101100010

Octal: -1542

Duodecimal: -602

Hexadecimal: -362

Square: 749956

Square Root: 29.427877939124322

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 f(-x³, -x⁵)² / (ψ(-x) * ψ(x²)) in powers of·where ψ() is a Ramanujan θ function and f(, ) is Ramanujan's general θ functions. A245433

Expansion of ∏_k>=1 (1 + k·x^k)/(1 + 2·x^k). A269154

McKay-Thompson series of class 12G for Monster. A58485

a(n) = a(n-1) - 4·a(n-2), a(0)=1, a(1)=2. A133631

Numerator of Hermite(n, 2/21). A159706

a(n) = 6·n² + 2 for n > 0, a(0)=1. A5897

List of totally balanced sequences of 2n binary digits written in base 10. Binary expansion of each term contains n 0's and n 1's and reading from left to right (the most significant to the least significant bit), the number of 0's never exceeds the number of 1's. A14486

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 4.8.8 2D tiling (cf. A008576). A299259

Monotonic ordering of set S generated by these rules: if·and y are in S then x² + y² is in S, and 1 is in S. A192476

Differences between positive cubes in 1, 2 or 3 ways: union of A014439, A014440 and A014441. A38593