22660164 has 18 divisors (see below), whose sum is σ = 57279950. Its totient is φ = 7553376.

The previous prime is 22660087. The next prime is 22660177. The reversal of 22660164 is 46106622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17994564 + 4665600 = 4242^2 + 2160^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 314689 + ... + 314760.

Almost surely, 2^22660164 is an apocalyptic number.

It is an amenable number.

22660164 is an abundant number, since it is smaller than the sum of its proper divisors (34619786).

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

22660164 is a wasteful number, since it uses less digits than its factorization.

22660164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629459 (or 629454 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 22660164 is about 4760.2693201120. The cubic root of 22660164 is about 282.9790925466.

Adding to 22660164 its reverse (46106622), we get a palindrome (68766786).

The spelling of 22660164 in words is "twenty-two million, six hundred sixty thousand, one hundred sixty-four".