Properties of the Number -627

Six Hundred Twenty-Seven

Basics

Value: -628 → -627 → -626

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 11 × 19

Divisors: 1, 3, 11, 19, 33, 57, 209, 627

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: -1001110011

Octal: -1163

Duodecimal: -443

Hexadecimal: -273

Square: 393129

Square Root: 25.03996805109783

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

Lucas and Lehmer numbers with parameters (1 +- sqrt(-7))/2. A107920

Expansion of reciprocal of Hauptmodul for Gamma₀(18). A92848

Triangle of coefficients T(n,k) in g.f. A(x,y) satisfying ∑_n=-oo..+oo (xⁿ - y·A(x,y))ⁿ = 1 - (y-2)*∑_n>=1 x^n², for n >= 1, as read by rows. A370041

FP4 polynomials related to the o.g.f.s of the columns of the A156925 matrix. A156933

Expansion of q^-1 * (φ(q) / φ(q⁹) - 1) / 2 in powers of q³ where φ() is a Ramanujan θ function. A128111

Numerators of coefficient array for minimal polynomials of sin(2*π/n). Rising powers of x. A181872

Triangle T(n, k, m) = t(n,m)/( t(k,m) * t(n-k,m) ) with T(n, 0, m) = T(n, n, m) = 1, where t(n, m) = ∏_j=1..n ∏_i=1..j-1 ( 1 - (m+1)*(2·i-1) ) and m = 3, read by rows. A156698

Row sums of the Riordan array (1-4·x+4·x², x*(1-2·x)) (A167431). A167433

Expansion of (1-x)/(1-x+x²+x³). A78016

Sequence is {a(4,n)}, where a(m,n) is defined at sequence A110665. A110669