65165772 has 48 divisors (see below), whose sum is σ = 174175232. Its totient is φ = 18576000.

The previous prime is 65165767. The next prime is 65165783. The reversal of 65165772 is 27756156.

It is a self number, because there is not a number n which added to its sum of digits gives 65165772.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62568 + ... + 63600.

Almost surely, 2^65165772 is an apocalyptic number.

It is an amenable number.

65165772 is an abundant number, since it is smaller than the sum of its proper divisors (109009460).

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

65165772 is a wasteful number, since it uses less digits than its factorization.

65165772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1796 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 65165772 is about 8072.5319448114. The cubic root of 65165772 is about 402.4140927469.

The spelling of 65165772 in words is "sixty-five million, one hundred sixty-five thousand, seven hundred seventy-two".