65165172 has 12 divisors (see below), whose sum is σ = 152052096. Its totient is φ = 21721720.

The previous prime is 65165123. The next prime is 65165173. The reversal of 65165172 is 27156156.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65165173) 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, 2715204 + ... + 2715227.

It is an arithmetic number, because the mean of its divisors is an integer number (12671008).

Almost surely, 2^65165172 is an apocalyptic number.

It is an amenable number.

65165172 is an abundant number, since it is smaller than the sum of its proper divisors (86886924).

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

65165172 is a wasteful number, since it uses less digits than its factorization.

65165172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5430438 (or 5430436 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 65165172 is about 8072.4947816645. The cubic root of 65165172 is about 402.4128576957.

The spelling of 65165172 in words is "sixty-five million, one hundred sixty-five thousand, one hundred seventy-two".