22563664 has 20 divisors (see below), whose sum is σ = 44272960. Its totient is φ = 11138400.

The previous prime is 22563649. The next prime is 22563677. The reversal of 22563664 is 46636522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7662 + ... + 10189.

It is an arithmetic number, because the mean of its divisors is an integer number (2213648).

Almost surely, 2^22563664 is an apocalyptic number.

It is an amenable number.

22563664 is a deficient number, since it is larger than the sum of its proper divisors (21709296).

22563664 is a wasteful number, since it uses less digits than its factorization.

22563664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17938 (or 17932 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 22563664 is about 4750.1225247355. The cubic root of 22563664 is about 282.5768251130.

The spelling of 22563664 in words is "twenty-two million, five hundred sixty-three thousand, six hundred sixty-four".