22664565 has 96 divisors (see below), whose sum is σ = 50798592. Its totient is φ = 9072000.

The previous prime is 22664533. The next prime is 22664567. The reversal of 22664565 is 56546622.

22664565 is a `hidden beast` number, since 2 + 2 + 6 + 645 + 6 + 5 = 666.

It is not a de Polignac number, because 22664565 - 2⁵ = 22664533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22664567) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 107310 + ... + 107520.

It is an arithmetic number, because the mean of its divisors is an integer number (529152).

Almost surely, 2^22664565 is an apocalyptic number.

It is an amenable number.

22664565 is an abundant number, since it is smaller than the sum of its proper divisors (28134027).

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

22664565 is a wasteful number, since it uses less digits than its factorization.

22664565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 268 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 22664565 is about 4760.7315614304. The cubic root of 22664565 is about 282.9974111897.

The spelling of 22664565 in words is "twenty-two million, six hundred sixty-four thousand, five hundred sixty-five".