22623 has 4 divisors (see below), whose sum is σ = 30168. Its totient is φ = 15080.

The previous prime is 22621. The next prime is 22637. The reversal of 22623 is 32622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22623 - 2¹ = 22621 is a prime.

It is a D-number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3768 + ... + 3773.

It is an arithmetic number, because the mean of its divisors is an integer number (7542).

2²²⁶²³ is an apocalyptic number.

22623 is a deficient number, since it is larger than the sum of its proper divisors (7545).

22623 is an equidigital number, since it uses as much as digits as its factorization.

22623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7544.

The product of its digits is 144, while the sum is 15.

The square root of 22623 is about 150.4094411930. The cubic root of 22623 is about 28.2824307119.

Subtracting 22623 from its reverse (32622), we obtain a palindrome (9999).

It can be divided in two parts, 2262 and 3, that multiplied together give a triangular number (6786 = T₁₁₆).

The spelling of 22623 in words is "twenty-two thousand, six hundred twenty-three".