Properties of the Number 673

Six Hundred Seventy-Three

Basics

Value: 672 → 673 → 674

Parity: odd

Prime: Yes

Previous Prime: 661

Next Prime: 677

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 673

Divisors: 1, 673

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1010100001

Octal: 1241

Duodecimal: 481

Hexadecimal: 2a1

Square: 452929

Square Root: 25.942243542145693

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

Primes of the form x² + xy + 2y², with·and y nonnegative. A106856

Primes p such that p + 4 is also prime. A23200

Number of partitions of n into parts 5k+2 or 5k+3. A3106

Primes congruent to 1 (mod 12). A68228

Primes p such that (p+1)/2 is prime. A5383

Number of partitions of n having an integer median. A325347

Primes of form 8n+1, that is, primes congruent to 1 mod 8. A7519

Numbers k such that 23^k - 22^k is prime, or a strong pseudoprime. A62589

Primes p such that the decimal expansion of its base-9 conversion is also prime. A65727

Irregular primes: primes p such that at least one of the numerators of the Bernoulli numbers B₂, B₄, ..., B_p-3 (A000367) is divisible by p. A928