Properties of the Number 679

Six Hundred Seventy-Nine

Basics

Value: 678 → 679 → 680

Parity: odd

Prime: No

Previous Prime: 677

Next Prime: 683

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 × 97

Divisors: 1, 7, 97, 679

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010100111

Octal: 1247

Duodecimal: 487

Hexadecimal: 2a7

Square: 461041

Square Root: 26.057628441590765

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

First differences of A006128. A138137

Smallest number of multiplicative persistence n. A3001

Sequence and first differences (A030124) together list all positive numbers exactly once. A5228

Number of partitions of n into nonprime parts. A2095

Sums of three consecutive primes. A34961

Numbers whose sum of divisors is a square. A6532

Triangle read by rows in which row n (n >= 1) gives coefficients in expansion of the polynomial f(n) * ∏_i=1..n-1 f(2i), where f(k) = (1 - x^k)/(1-x). A162206

Number of reduced words of length n in the Weyl group D₆. A162209

Schur's 1926 partition theorem: number of partitions of n into parts 6n+1 or 6n-1. A3105

Numbers that are the sum of 9 positive 5th powers. A3354