64319408 has 40 divisors (see below), whose sum is σ = 136896000. Its totient is φ = 29139264.

The previous prime is 64319407. The next prime is 64319413. The reversal of 64319408 is 80491346.

It is not an unprimeable number, because it can be changed into a prime (64319401) 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, 2393 + ... + 11591.

It is an arithmetic number, because the mean of its divisors is an integer number (3422400).

Almost surely, 2^64319408 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 64319408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68448000).

64319408 is an abundant number, since it is smaller than the sum of its proper divisors (72576592).

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

64319408 is a wasteful number, since it uses less digits than its factorization.

64319408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249 (or 9243 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 64319408 is about 8019.9381543750. The cubic root of 64319408 is about 400.6643293887.

The spelling of 64319408 in words is "sixty-four million, three hundred nineteen thousand, four hundred eight".