64375915 has 12 divisors (see below), whose sum is σ = 78279264. Its totient is φ = 50824176.

The previous prime is 64375901. The next prime is 64375931. The reversal of 64375915 is 51957346.

It is a de Polignac number, because none of the positive numbers 2^k-64375915 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30174 + ... + 32236.

It is an arithmetic number, because the mean of its divisors is an integer number (6523272).

Almost surely, 2^64375915 is an apocalyptic number.

64375915 is a deficient number, since it is larger than the sum of its proper divisors (13903349).

64375915 is an equidigital number, since it uses as much as digits as its factorization.

64375915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226 (or 2147 counting only the distinct ones).

The product of its digits is 113400, while the sum is 40.

The square root of 64375915 is about 8023.4602884292. The cubic root of 64375915 is about 400.7816278997.

The spelling of 64375915 in words is "sixty-four million, three hundred seventy-five thousand, nine hundred fifteen".