Properties of the Number 626

Six Hundred Twenty-Six

Basics

Value: 625 → 626 → 627

Parity: even

Prime: No

Previous Prime: 619

Next Prime: 631

Digit Sum: 14

Digital Root: 5

Palindrome: Yes

Factorization: 2 × 313

Divisors: 1, 2, 313, 626

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110010

Octal: 1162

Duodecimal: 442

Hexadecimal: 272

Square: 391876

Square Root: 25.019992006393608

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

a(n) = n² + 1. A2522

Partial sums of Catalan numbers (A000108). A14137

Numbers that are the sum of 2 positive 4th powers. A3336

sigma₄(n): sum of 4th powers of divisors of n. A1159

Quarter-squares plus 1 (that is, a(n) = A002620(n) + 1). A33638

Untouchable numbers, also called nonaliquot numbers: impossible values for the sum of aliquot parts function (A001065). A5114

a(n) = 5ⁿ + 1. A34474

Number of partitions of n into prime power parts (1 included); number of nonisomorphic Abelian subgroups of symmetric group S_n. A23893

Coefficients of the '5th-order' mock θ function chi₁(q). A53263

Perfect powers (squares, cubes, etc., not including 1) plus 1. A216765