64680044 has 48 divisors (see below), whose sum is σ = 134887200. Its totient is φ = 26749440.

The previous prime is 64680017. The next prime is 64680059. The reversal of 64680044 is 44008646.

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, 40982 + ... + 42530.

It is an arithmetic number, because the mean of its divisors is an integer number (2810150).

Almost surely, 2^64680044 is an apocalyptic number.

It is an amenable number.

64680044 is an abundant number, since it is smaller than the sum of its proper divisors (70207156).

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

64680044 is a wasteful number, since it uses less digits than its factorization.

64680044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 64680044 is about 8042.3904406588. The cubic root of 64680044 is about 401.4117697368.

The spelling of 64680044 in words is "sixty-four million, six hundred eighty thousand, forty-four".