64251165 has 16 divisors (see below), whose sum is σ = 112147776. Its totient is φ = 31152000.

The previous prime is 64251157. The next prime is 64251227. The reversal of 64251165 is 56115246.

It is not a de Polignac number, because 64251165 - 2³ = 64251157 is a prime.

It is a Curzon number.

It is a congruent number.

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, 194536 + ... + 194865.

It is an arithmetic number, because the mean of its divisors is an integer number (7009236).

Almost surely, 2^64251165 is an apocalyptic number.

It is an amenable number.

64251165 is a deficient number, since it is larger than the sum of its proper divisors (47896611).

64251165 is a wasteful number, since it uses less digits than its factorization.

64251165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389420.

The product of its digits is 7200, while the sum is 30.

The square root of 64251165 is about 8015.6824413147. The cubic root of 64251165 is about 400.5225774015.

The spelling of 64251165 in words is "sixty-four million, two hundred fifty-one thousand, one hundred sixty-five".