64675864 has 16 divisors (see below), whose sum is σ = 132291720. Its totient is φ = 29398080.

The previous prime is 64675823. The next prime is 64675873. The reversal of 64675864 is 46857646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367389 + ... + 367564.

Almost surely, 2^64675864 is an apocalyptic number.

It is an amenable number.

64675864 is an abundant number, since it is smaller than the sum of its proper divisors (67615856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64675864 is a wasteful number, since it uses less digits than its factorization.

64675864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734970 (or 734966 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 64675864 is about 8042.1305634763. The cubic root of 64675864 is about 401.4031223641.

The spelling of 64675864 in words is "sixty-four million, six hundred seventy-five thousand, eight hundred sixty-four".