ℕ atory
Play Now

Properties of the Number -6530

Five Hundred Thirty

Basics

Value: -6531 → -6530 → -6529

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 653

Divisors: 1, 2, 5, 10, 653, 1306, 3265, 6530

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -1100110000010

Octal: -14602

Duodecimal: -3942

Hexadecimal: -1982

Square: 42640900

Square Root: 80.8084154033477

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

Even triangle n!. This table read by rows gives the coefficients of sum formulas of n-th factorials (A000142). The k-th row (6>=k>=1) contains T(i,k) for i=1 to k+3, where k=[2·n+1+(-1)n-1]/4 and T(i,k) satisfies n! = ∑i=1..k+3 T(i,k) * ni-1 / (2·k-2)!. A102409
Pendular triangle, read by rows, where row n is formed from row n-1 by the recurrence: if n > 2k, T(n,k) = T(n,n-k) + T(n-1,k), else T(n,k) = T(n,n-1-k) + 3·T(n-1,k), for n>=k>=0, with T(n,0)=1 and T(n,n)=0n. A118350
Expansion of ∏k>=0 (1 + x3·k+1)/(1 - x3·k+1). A261610
a(n) is the conjectured highest power of n which has no four identical digits in succession. A216065
Number of strict compositions of n that are neither unimodal nor is their negation. A332874
Total number of parts coprime to n in the partitions of n into 10 parts. A363328
Convolution triangle, read by rows, where diagonals are successive self-convolutions of A118351. A118354
T(n,k) = Number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally and vertically. A253731
Numbers k such that the continued fraction for sqrt(k) has period 9. A10339
Semi-diagonal (one row below central terms) of pendular triangle A118350 and equal to the self-convolution of the central terms (A118351). A118352