64880832 has 56 divisors (see below), whose sum is σ = 176322736. Its totient is φ = 21040128.

The previous prime is 64880813. The next prime is 64880843. The reversal of 64880832 is 23808846.

It is a super-2 number, since 2×64880832² = 8419044722024448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2538 + ... + 11670.

Almost surely, 2^64880832 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 64880832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88161368).

64880832 is an abundant number, since it is smaller than the sum of its proper divisors (111441904).

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

64880832 is a wasteful number, since it uses less digits than its factorization.

64880832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185 (or 9175 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 64880832 is about 8054.8638722203. The cubic root of 64880832 is about 401.8267117779.

The spelling of 64880832 in words is "sixty-four million, eight hundred eighty thousand, eight hundred thirty-two".