22666656 has 24 divisors (see below), whose sum is σ = 59500224. Its totient is φ = 7555520.

The previous prime is 22666621. The next prime is 22666663. The reversal of 22666656 is 65666622.

It is a tau number, because it is divible by the number of its divisors (24).

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, 117960 + ... + 118151.

It is an arithmetic number, because the mean of its divisors is an integer number (2479176).

Almost surely, 2^22666656 is an apocalyptic number.

It is an amenable number.

22666656 is an abundant number, since it is smaller than the sum of its proper divisors (36833568).

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

22666656 is a wasteful number, since it uses less digits than its factorization.

22666656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236124 (or 236116 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 22666656 is about 4760.9511654710. The cubic root of 22666656 is about 283.0061138994.

The spelling of 22666656 in words is "twenty-two million, six hundred sixty-six thousand, six hundred fifty-six".