22664564 has 12 divisors (see below), whose sum is σ = 42714084. Its totient is φ = 10460544.

The previous prime is 22664533. The next prime is 22664567. The reversal of 22664564 is 46546622.

It can be written as a sum of positive squares in 2 ways, for example, as 1227664 + 21436900 = 1108^2 + 4630^2 .

It is a super-2 number, since 2×22664564² = 1027364922620192, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 217877 + ... + 217980.

It is an arithmetic number, because the mean of its divisors is an integer number (3559507).

Almost surely, 2^22664564 is an apocalyptic number.

It is an amenable number.

22664564 is a deficient number, since it is larger than the sum of its proper divisors (20049520).

22664564 is a wasteful number, since it uses less digits than its factorization.

22664564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435874 (or 435872 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 22664564 is about 4760.7314564046. The cubic root of 22664564 is about 282.9974070276.

The spelling of 22664564 in words is "twenty-two million, six hundred sixty-four thousand, five hundred sixty-four".