22656657 has 8 divisors (see below), whose sum is σ = 30911584. Its totient is φ = 14753088.

The previous prime is 22656637. The next prime is 22656659. The reversal of 22656657 is 75665622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22656657 - 2⁸ = 22656401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22656659) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 87688 + ... + 87945.

It is an arithmetic number, because the mean of its divisors is an integer number (3863948).

Almost surely, 2^22656657 is an apocalyptic number.

It is an amenable number.

22656657 is a deficient number, since it is larger than the sum of its proper divisors (8254927).

22656657 is a wasteful number, since it uses less digits than its factorization.

22656657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175679.

The product of its digits is 151200, while the sum is 39.

The square root of 22656657 is about 4759.9009443475. The cubic root of 22656657 is about 282.9644933748.

The spelling of 22656657 in words is "twenty-two million, six hundred fifty-six thousand, six hundred fifty-seven".