22666564 has 6 divisors (see below), whose sum is σ = 39666494. Its totient is φ = 11333280.

The previous prime is 22666541. The next prime is 22666571. The reversal of 22666564 is 46566622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17640000 + 5026564 = 4200^2 + 2242^2 .

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 as a sum of consecutive naturals, namely, 2833317 + ... + 2833324.

Almost surely, 2^22666564 is an apocalyptic number.

It is an amenable number.

22666564 is a deficient number, since it is larger than the sum of its proper divisors (16999930).

22666564 is a wasteful number, since it uses less digits than its factorization.

22666564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5666645 (or 5666643 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 22666564 is about 4760.9415035264. The cubic root of 22666564 is about 283.0057310081.

The spelling of 22666564 in words is "twenty-two million, six hundred sixty-six thousand, five hundred sixty-four".