Properties of the Number -630

Six Hundred Thirty

Basics

Value: -631 → -630 → -629

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 7

Divisors: 1, 2, 3, 5, 6, 7, 9, 10, 14, 15

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1001110110

Octal: -1166

Duodecimal: -446

Hexadecimal: -276

Square: 396900

Square Root: 25.099800796022265

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

Triangle of Lah numbers. A8297

Coefficients of list partition transform: reciprocal of an exponential generating function (e.g.f.). A133314

Irregular triangle read by rows: coefficients C(j,k) of a partition transform for direct Lagrange inversion. A134685

Lower triangular array T(n,k) generator for group of arrays related to A001147 and A102625. A132382

Cumulant expansion numbers: Coefficients in expansion of log(1 + ∑_k>=1 x[k]*(t^k)/k!). A127671

G.f. A(x,y) satisfies: y = f(x,A(x,y)), where f(x,y) = ∑_n=-oo..oo x^n*(n+1/2) * y^n*(n-1/2) is Ramanujan's θ function. A354649

Irregular triangle read by rows: row n gives coefficients of n-th logarithmic polynomial L_n(x₁, x₂, ...) with monomials sorted into standard order. A263634

Alternating sum of squares to n. A89594

a(n) = nearest integer to n² * sin(sqrt(n)). A274088

a(n) = prime(n+3)*prime(n) - prime(n+1)*prime(n+2). A117301