Properties of the Number -64

Sixty-Four

Basics

Value: -65 → -64 → -63

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ⁶

Divisors: 1, 2, 4, 8, 16, 32, 64

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000000

Octal: -100

Duodecimal: -54

Hexadecimal: -40

Square: 4096

Square Root: 8

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Triangle of coefficients of Laguerre polynomials n!*L_n(x) (rising powers of x). A21009

Triangle read by rows. T(n, m) are the coefficients of Sidi polynomials. A75513

G.f.: ∏_k>0 (1-x^5k-1)*(1-x^5k-4)/((1-x^5k-2)*(1-x^5k-3)). A7325

Expansion of e.g.f. sin(x)*exp(x). A9545

Expansion of (1-x)/(1 - 2·x + 2·x²). A146559

Expansion of e.g.f. cos(x) / exp(x). A9116

Triangle read by rows: coefficients T(n,k) of a binomial decomposition of 1 as ∑_k=0..n T(n,k)*binomial(n,k). A244116

Triangle read by rows: terms T(n,k) of a binomial decomposition of nⁿ as Sum(k=0..n)T(n,k). A244123

Triangle read by rows: coefficients T(n,k) of a binomial decomposition of 0^n-1 as Sum(k=0..n)T(n,k)*binomial(n,k). A244128

Triangle read by rows: terms of a binomial decomposition of 0^n-1 as Sum(k=0..n)T(n,k). A244129