720785768 has 16 divisors (see below), whose sum is σ = 1353284160. Its totient is φ = 359910000.

The previous prime is 720785731. The next prime is 720785777. The reversal of 720785768 is 867587027.

720785768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53978 + ... + 65993.

It is an arithmetic number, because the mean of its divisors is an integer number (84580260).

Almost surely, 2^720785768 is an apocalyptic number.

It is an amenable number.

720785768 is a deficient number, since it is larger than the sum of its proper divisors (632498392).

720785768 is a wasteful number, since it uses less digits than its factorization.

720785768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120728 (or 120724 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 50.

The square root of 720785768 is about 26847.4536595186. The cubic root of 720785768 is about 896.6068811838.

The spelling of 720785768 in words is "seven hundred twenty million, seven hundred eighty-five thousand, seven hundred sixty-eight".