64334864 has 60 divisors (see below), whose sum is σ = 142355472. Its totient is φ = 27931200.

The previous prime is 64334843. The next prime is 64334873. The reversal of 64334864 is 46843346.

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, 92759 + ... + 93449.

Almost surely, 2^64334864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64334864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71177736).

64334864 is an abundant number, since it is smaller than the sum of its proper divisors (78020608).

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

64334864 is a wasteful number, since it uses less digits than its factorization.

64334864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 727 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

The square root of 64334864 is about 8020.9016949468. The cubic root of 64334864 is about 400.6964201272.

The spelling of 64334864 in words is "sixty-four million, three hundred thirty-four thousand, eight hundred sixty-four".