64563172 has 6 divisors (see below), whose sum is σ = 112985558. Its totient is φ = 32281584.

The previous prime is 64563133. The next prime is 64563199. The reversal of 64563172 is 27136546.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64256256 + 306916 = 8016^2 + 554^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8070393 + ... + 8070400.

Almost surely, 2^64563172 is an apocalyptic number.

It is an amenable number.

64563172 is a deficient number, since it is larger than the sum of its proper divisors (48422386).

64563172 is a wasteful number, since it uses less digits than its factorization.

64563172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16140797 (or 16140795 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 64563172 is about 8035.1211565228. The cubic root of 64563172 is about 401.1698502903.

The spelling of 64563172 in words is "sixty-four million, five hundred sixty-three thousand, one hundred seventy-two".