22656961 has 8 divisors (see below), whose sum is σ = 23247360. Its totient is φ = 22071168.

The previous prime is 22656899. The next prime is 22656973. The reversal of 22656961 is 16965622.

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

It is a cyclic number.

It is not a de Polignac number, because 22656961 - 2⁷ = 22656833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22656961.

It is not an unprimeable number, because it can be changed into a prime (22656761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10225 + ... + 12241.

It is an arithmetic number, because the mean of its divisors is an integer number (2905920).

Almost surely, 2^22656961 is an apocalyptic number.

It is an amenable number.

22656961 is a deficient number, since it is larger than the sum of its proper divisors (590399).

22656961 is a wasteful number, since it uses less digits than its factorization.

22656961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303.

The product of its digits is 38880, while the sum is 37.

The square root of 22656961 is about 4759.9328776780. The cubic root of 22656961 is about 282.9657589458.

The spelling of 22656961 in words is "twenty-two million, six hundred fifty-six thousand, nine hundred sixty-one".