22605623 has 4 divisors (see below), whose sum is σ = 22673040. Its totient is φ = 22538208.

The previous prime is 22605593. The next prime is 22605641. The reversal of 22605623 is 32650622.

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 22605623 - 2⁸ = 22605367 is a prime.

It is a super-2 number, since 2×22605623² = 1022028382436258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22605592 and 22605601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22605823) 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, 33203 + ... + 33876.

It is an arithmetic number, because the mean of its divisors is an integer number (5668260).

Almost surely, 2^22605623 is an apocalyptic number.

22605623 is a deficient number, since it is larger than the sum of its proper divisors (67417).

22605623 is an equidigital number, since it uses as much as digits as its factorization.

22605623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67416.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 22605623 is about 4754.5370962902. The cubic root of 22605623 is about 282.7518749796.

The spelling of 22605623 in words is "twenty-two million, six hundred five thousand, six hundred twenty-three".