Properties of the Number -1365

Three Hundred Sixty-Five

Basics

Value: -1366 → -1365 → -1364

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 7 × 13

Divisors: 1, 3, 5, 7, 13, 15, 21, 35, 39, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10101010101

Octal: -2525

Duodecimal: -959

Hexadecimal: -555

Square: 1863225

Square Root: 36.945906403822335

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/((1-x)*(1+2·x)). A77925

Expansion of 1/(1-x+2·x²-2·x³). A77953

Expansion of ∏_k>=1 (1 - x^k/(1 + x)). A307601

Triangle read by rows. The matrix inverse of A354794. Equivalently, the Bell transform of cfact(n) = -(n - 1)! if n > 0 and otherwise 1/(-n)!. A354795

Expansion of c(q⁴) / c(q) in powers of q where c() is a cubic AGM θ function. A123649

Expansion of q * (ψ(q³) * ψ(q⁶)) / (ψ(q) * φ(q)) in powers of q where φ(), ψ() are Ramanujan θ functions. A228447

G.f. A(x) satisfies: A(x) = A(x⁴ - x⁶)/x³. A350483

a(n) = (-1)ⁿ * A000032(n) - 1. A355021

Expansion of 1/(1 + x + 2·x² + 2·x³). A77980

Array for second (k=2) convolution of Chebyshev's S(n,x)=U(n,x/2) polynomials. A128503