Properties of the Number 6626

Six Thousand Six Hundred Twenty-Six

Basics

Value: 6625 → 6626 → 6627

Parity: even

Prime: No

Previous Prime: 6619

Next Prime: 6637

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 3313

Divisors: 1, 2, 3313, 6626

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100111100010

Octal: 14742

Duodecimal: 3A02

Hexadecimal: 19e2

Square: 43903876

Square Root: 81.40024569987489

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

Number of nonempty subsets of {1..n} whose geometric mean is an integer. A326027

a(n) = 3·n² - 1. A80663

The (1,1)-entry of the matrix Mⁿ, where M is the 5 X 5 matrix [[0,1,0,0,0],[0,0,1,0,0], [0,0,0,1,0], [0,0,0,0,1], [1,0,-1,1,1]]. A107293

Array read by antidiagonals: T(n,k) is the number of noncrossing partitions up to rotation composed of n blocks of size k. A303694

Nearest integer to 100·1.1ⁿ. A204590

Sum of reciprocals of digits = 1. A37268

Beach-Williams Pell numbers of type 2p (p prime). A212074

Numbers in which 6 outnumbers all other digits together. A292736

a(n) = 25·n² - 36·n + 13. A154355

Positions of 2's in A264977; positions of 3's in A277330. A277712