Properties of the Number 23669

Twenty-Three Thousand Six Hundred Sixty-Nine

Basics

Value: 23668 → 23669 → 23670

Parity: odd

Prime: Yes

Previous Prime: 23663

Next Prime: 23671

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 23669

Divisors: 1, 23669

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101110001110101

Octal: 56165

Duodecimal: 11845

Hexadecimal: 5c75

Square: 560221561

Square Root: 153.8473269186046

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 B-trees of order infinity with n leaves, where a(n) = ∑_{k=1..floor(n/2)} a(k)*C(n-k-1,n-2·k) for n >= 2, with a(0)=0, a(1)=1. A119262

Numbers k such that 3^k + 14 is prime. A219035

Numbers k such that k·2^m-1 are composites for all exponents m in the range 0<=m<=k. A61154

Main diagonal of Ludic array A255127 (and A255129): a(n) = A255127(n,n). A255410

Let p be the n-th odd prime. a(n) is the least prime congruent to 5 modulo 8 such that Legendre(-a(n), q) = -Legendre(-2, q) for all odd primes q <= p. A1990

Near twin primes of order 18: twin primes (p, p+2) such that p+18 and p+20 are primes. A79304

a(1)=1. For n >= 2, a(n) = 2·a(n-1) + (number of composites among first n-1 terms of the sequence). A175104

Number of lower triangles of a 3 X 3 0..n array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less. A195249

Smallest of 4 consecutive prime numbers that when represented as a simple continued fraction, generates prime numbers in the numerator and denominator, when reduced. A270884

Primes that can be generated by the concatenation in base 3, in ascending order, of two consecutive integers read in base 10. A287300