64315888 has 80 divisors (see below), whose sum is σ = 154878976. Its totient is φ = 25194240.

The previous prime is 64315873. The next prime is 64315897. The reversal of 64315888 is 88851346.

It is a congruent number.

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, 237193 + ... + 237463.

Almost surely, 2^64315888 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 64315888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77439488).

64315888 is an abundant number, since it is smaller than the sum of its proper divisors (90563088).

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

64315888 is a wasteful number, since it uses less digits than its factorization.

64315888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 456 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 64315888 is about 8019.7186983086. The cubic root of 64315888 is about 400.6570202202.

The spelling of 64315888 in words is "sixty-four million, three hundred fifteen thousand, eight hundred eighty-eight".