720385904 has 20 divisors (see below), whose sum is σ = 1595140464. Its totient is φ = 308736768.

The previous prime is 720385901. The next prime is 720385957. The reversal of 720385904 is 409583027.

720385904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a pancake number, because a pancake can be divided into 720385904 parts by 37957 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720385901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3215897 + ... + 3216120.

Almost surely, 2^720385904 is an apocalyptic number.

It is an amenable number.

720385904 is an abundant number, since it is smaller than the sum of its proper divisors (874754560).

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

720385904 is a wasteful number, since it uses less digits than its factorization.

720385904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432032 (or 6432026 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 720385904 is about 26840.0056631887. The cubic root of 720385904 is about 896.4410496019.

The spelling of 720385904 in words is "seven hundred twenty million, three hundred eighty-five thousand, nine hundred four".