64372880 has 160 divisors (see below), whose sum is σ = 186738048. Its totient is φ = 20275200.

The previous prime is 64372879. The next prime is 64372907. The reversal of 64372880 is 8827346.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194315 + ... + 194645.

Almost surely, 2^64372880 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 64372880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93369024).

64372880 is an abundant number, since it is smaller than the sum of its proper divisors (122365168).

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

64372880 is a wasteful number, since it uses less digits than its factorization.

64372880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 64372880 is about 8023.2711533389. The cubic root of 64372880 is about 400.7753295227.

The spelling of 64372880 in words is "sixty-four million, three hundred seventy-two thousand, eight hundred eighty".