Properties of the Number 676

Six Hundred Seventy-Six

Basics

Value: 675 → 676 → 677

Parity: even

Prime: No

Previous Prime: 673

Next Prime: 677

Digit Sum: 19

Digital Root: 1

Palindrome: Yes

Factorization: 2 ² × 13 ²

Divisors: 1, 2, 4, 13, 26, 52, 169, 338, 676

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010100100

Octal: 1244

Duodecimal: 484

Hexadecimal: 2a4

Square: 456976

Square Root: 26

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

The squares: a(n) = n². A290

Perfect powers: m^k where m > 0 and k >= 2. A1597

Powerful numbers, definition (1): if a prime p divides n then p² must also divide n (also called squareful, square full, square-full or 2-powerful numbers). A1694

Quarter-squares: a(n) = floor(n/2)*ceiling(n/2). Equivalently, a(n) = floor(n²/4). A2620

Number of partitions of n into parts each of which is used a different number of times. A98859

Product of divisors of n. A7955

Squares and twice squares. A28982

Powerful numbers (A001694) that are not prime powers (A000961). A286708

Even squares: a(n) = (2·n)². A16742

Perfect powers of nonprimes (m^k where m is a nonprime positive integer and k >= 2). A131605