64903875 has 32 divisors (see below), whose sum is σ = 114364224. Its totient is φ = 32576000.

The previous prime is 64903871. The next prime is 64903889. The reversal of 64903875 is 57830946.

It is a happy number.

It is not a de Polignac number, because 64903875 - 2² = 64903871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64903871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1285 + ... + 11465.

It is an arithmetic number, because the mean of its divisors is an integer number (3573882).

Almost surely, 2^64903875 is an apocalyptic number.

64903875 is a deficient number, since it is larger than the sum of its proper divisors (49460349).

64903875 is a wasteful number, since it uses less digits than its factorization.

64903875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10216 (or 10206 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 64903875 is about 8056.2941232306. The cubic root of 64903875 is about 401.8742769148.

The spelling of 64903875 in words is "sixty-four million, nine hundred three thousand, eight hundred seventy-five".