64315015 has 16 divisors (see below), whose sum is σ = 81907200. Its totient is φ = 48375712.

The previous prime is 64315007. The next prime is 64315037. The reversal of 64315015 is 51051346.

It is a cyclic number.

It is not a de Polignac number, because 64315015 - 2³ = 64315007 is a prime.

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, 2046 + ... + 11524.

It is an arithmetic number, because the mean of its divisors is an integer number (5119200).

Almost surely, 2^64315015 is an apocalyptic number.

64315015 is a deficient number, since it is larger than the sum of its proper divisors (17592185).

64315015 is a wasteful number, since it uses less digits than its factorization.

64315015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9566.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 64315015 is about 8019.6642697809. The cubic root of 64315015 is about 400.6552074221.

The spelling of 64315015 in words is "sixty-four million, three hundred fifteen thousand, fifteen".