22620664 has 16 divisors (see below), whose sum is σ = 46269720. Its totient is φ = 10282080.

The previous prime is 22620649. The next prime is 22620683. The reversal of 22620664 is 46602622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128439 + ... + 128614.

Almost surely, 2^22620664 is an apocalyptic number.

It is an amenable number.

22620664 is an abundant number, since it is smaller than the sum of its proper divisors (23649056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22620664 is a wasteful number, since it uses less digits than its factorization.

22620664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257070 (or 257066 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 22620664 is about 4756.1185855695. The cubic root of 22620664 is about 282.8145721835.

The spelling of 22620664 in words is "twenty-two million, six hundred twenty thousand, six hundred sixty-four".