23165564 has 6 divisors (see below), whose sum is σ = 40539744. Its totient is φ = 11582780.

The previous prime is 23165563. The next prime is 23165599. The reversal of 23165564 is 46556132.

It is a self number, because there is not a number n which added to its sum of digits gives 23165564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23165563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2895692 + ... + 2895699.

It is an arithmetic number, because the mean of its divisors is an integer number (6756624).

Almost surely, 2^23165564 is an apocalyptic number.

It is an amenable number.

23165564 is a deficient number, since it is larger than the sum of its proper divisors (17374180).

23165564 is a wasteful number, since it uses less digits than its factorization.

23165564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791395 (or 5791393 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 23165564 is about 4813.0618113629. The cubic root of 23165564 is about 285.0674468461.

The spelling of 23165564 in words is "twenty-three million, one hundred sixty-five thousand, five hundred sixty-four".