64404788 has 24 divisors (see below), whose sum is σ = 129091200. Its totient is φ = 27541728.

The previous prime is 64404779. The next prime is 64404811. The reversal of 64404788 is 88740446.

It is a congruent number.

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, 11993 + ... + 16511.

It is an arithmetic number, because the mean of its divisors is an integer number (5378800).

Almost surely, 2^64404788 is an apocalyptic number.

It is an amenable number.

64404788 is an abundant number, since it is smaller than the sum of its proper divisors (64686412).

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

64404788 is a wasteful number, since it uses less digits than its factorization.

64404788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039 (or 5037 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 64404788 is about 8025.2593727555. The cubic root of 64404788 is about 400.8415366320.

The spelling of 64404788 in words is "sixty-four million, four hundred four thousand, seven hundred eighty-eight".