Properties of the Number 2689

Two Thousand Six Hundred Eighty-Nine

Basics

Value: 2688 → 2689 → 2690

Parity: odd

Prime: Yes

Previous Prime: 2687

Next Prime: 2693

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2689

Divisors: 1, 2689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 101010000001

Octal: 5201

Duodecimal: 1681

Hexadecimal: a81

Square: 7230721

Square Root: 51.85556864985669

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 + 24·y². A107008

Primes of the form x² + 45y². A107152

Primes of the form x² + 40y². A107145

Primes of the form 16n+1. A94407

Prime numbers congruent to 1 modulo 16 representable by both x² + 32·y² and x² + 64·y². A325067

Proth primes: primes of the form k·2^m + 1 with odd k < 2^m, m >= 1. A80076

Primes p such that p + 4 is prime and p == 9 (mod 10). A74822

Balanced primes of order twelve. A96704

Primes that are the sum of 7 consecutive primes. A82246

Primes congruent to 1 mod 21. A124826