Properties of the Number -1065

Sixty-Five

Basics

Value: -1066 → -1065 → -1064

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 71

Divisors: 1, 3, 5, 15, 71, 213, 355, 1065

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000101001

Octal: -2051

Duodecimal: -749

Hexadecimal: -429

Square: 1134225

Square Root: 32.63433774416144

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

Alternating sum of heptagonal numbers. A266085

Expansion of (1-4x)/(1-x²+x³). A117379

Expansion of (1-5x²-7x³-2x⁴+x⁶)/((1-x)(1-x³)²). A141365

Values of n such that L(17) and N(17) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227520

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 358", based on the 5-celled von Neumann neighborhood. A271413

a(n)=det(M_n) where M_n is the n X n matrix m(i,j)=1 if σ(i+j) is even, 0 otherwise. A96734

Coefficients of polynomials from matrix characteristic polynomials: m(n,m,d)=If[ m <= n, Mod[Binomial[n, m], 2], 0]; M(n)=m(n,m,d).Transpose[m(n,m,d)].Transpose[m(n,m,d)].m(n,m,d). A158202

Number of partitions of n into parts 5k+1 or 5k+4. A3114

Generalized 12-gonal numbers: k*(5·k-4) for k = 0, +-1, +-2, ... A195162

12-gonal (or dodecagonal) numbers: a(n) = n*(5·n-4). A51624