64657875 has 16 divisors (see below), whose sum is σ = 107591328. Its totient is φ = 34484000.

The previous prime is 64657867. The next prime is 64657883. The reversal of 64657875 is 57875646.

It is an interprime number because it is at equal distance from previous prime (64657867) and next prime (64657883).

It is not a de Polignac number, because 64657875 - 2³ = 64657867 is a prime.

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, 85836 + ... + 86585.

It is an arithmetic number, because the mean of its divisors is an integer number (6724458).

Almost surely, 2^64657875 is an apocalyptic number.

64657875 is a deficient number, since it is larger than the sum of its proper divisors (42933453).

64657875 is a wasteful number, since it uses less digits than its factorization.

64657875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172439 (or 172429 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The square root of 64657875 is about 8041.0120631672. The cubic root of 64657875 is about 401.3659033775.

The spelling of 64657875 in words is "sixty-four million, six hundred fifty-seven thousand, eight hundred seventy-five".