Properties of the Number 623

Six Hundred Twenty-Three

Basics

Value: 622 → 623 → 624

Parity: odd

Prime: No

Previous Prime: 619

Next Prime: 631

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 7 × 89

Divisors: 1, 7, 89, 623

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1001101111

Octal: 1157

Duodecimal: 43B

Hexadecimal: 26f

Square: 388129

Square Root: 24.95996794869737

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 partitions of n into an even number of parts. A27187

Least inverse of A015910: smallest integer k > 0 such that 2^k mod k = n, or 0 if no such k exists. A36236

a(n) = n² - 2. A8865

Number of integer partitions of n having a unique mode. A362608

Number of partitions of n having a non-integer median. A307683

Number of strict integer partitions of n such that some part can be written as a nonnegative linear combination of the others. A364839

One half of number of non-self-conjugate partitions; also half of number of asymmetric Ferrers graphs with n nodes. A701

a(n) = solution to the postage stamp problem with 2 denominations and n stamps. A14616

a(n) = least k such that the remainder when 12^k is divided by k is n. A127820

Number of integer partitions of n with reverse-alternating sum < 0. A344608