22599 has 14 divisors (see below), whose sum is σ = 34976. Its totient is φ = 14580.

The previous prime is 22573. The next prime is 22613. The reversal of 22599 is 99522.

It is not a de Polignac number, because 22599 - 2⁵ = 22567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22599.

It is not an unprimeable number, because it can be changed into a prime (22549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 714 + ... + 744.

2²²⁵⁹⁹ is an apocalyptic number.

22599 is a deficient number, since it is larger than the sum of its proper divisors (12377).

22599 is an frugal number, since it uses more digits than its factorization.

22599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49 (or 34 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 22599 is about 150.3296377964. The cubic root of 22599 is about 28.2724258715.

It can be divided in two parts, 225 and 99, that added together give a square (324 = 18²).

The spelling of 22599 in words is "twenty-two thousand, five hundred ninety-nine".