Properties of the Number 624

Six Hundred Twenty-Four

Basics

Value: 623 → 624 → 625

Parity: even

Prime: No

Previous Prime: 619

Next Prime: 631

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ⁴ × 3 × 13

Divisors: 1, 2, 3, 4, 6, 8, 12, 13, 16, 24

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000

Octal: 1160

Duodecimal: 440

Hexadecimal: 270

Square: 389376

Square Root: 24.979991993593593

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) = n*(n+2) = (n+1)² - 1. A5563

Number of step shifted (decimated) sequence structures using a maximum of two different symbols. A56391

Number of ways of writing n as a sum of 4 squares; also θ series of four-dimensional cubic lattice Z⁴. A118

Number of rooted trees with n vertices in which vertices at the same level have the same degree. A3238

Numbers having k prime factors (counted with multiplicity), the largest of which is the k-th prime. A106529

Sum of positive integers in smallest positive reduced residue system modulo n. a(1) = 1 by convention. A23896

Inverse Möbius transform of A003961; a(n) = σ(A003961(n)), where A003961 shifts the prime factorization of n one step towards the larger primes. A3973

8 times triangular numbers: a(n) = 4·n*(n+1). A33996

Numbers that are divisible by the product of their digits. A7602

Numbers divisible by the product of their prime indices. A324850