64335968 has 48 divisors (see below), whose sum is σ = 134428896. Its totient is φ = 30243840.

The previous prime is 64335967. The next prime is 64335977. The reversal of 64335968 is 86953346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64335961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44180 + ... + 45612.

It is an arithmetic number, because the mean of its divisors is an integer number (2800602).

Almost surely, 2^64335968 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 64335968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67214448).

64335968 is an abundant number, since it is smaller than the sum of its proper divisors (70092928).

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

64335968 is a wasteful number, since it uses less digits than its factorization.

64335968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1519 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 64335968 is about 8020.9705148442. The cubic root of 64335968 is about 400.6987121261.

The spelling of 64335968 in words is "sixty-four million, three hundred thirty-five thousand, nine hundred sixty-eight".