789943664 has 20 divisors (see below), whose sum is σ = 1563081504. Its totient is φ = 386567808.

The previous prime is 789943621. The next prime is 789943691. The reversal of 789943664 is 466349987.

789943664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 524477 + ... + 525980.

Almost surely, 2^789943664 is an apocalyptic number.

It is an amenable number.

789943664 is a deficient number, since it is larger than the sum of its proper divisors (773137840).

789943664 is a wasteful number, since it uses less digits than its factorization.

789943664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050512 (or 1050506 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 56.

The square root of 789943664 is about 28105.9364547777. The cubic root of 789943664 is about 924.4115718008.

The spelling of 789943664 in words is "seven hundred eighty-nine million, nine hundred forty-three thousand, six hundred sixty-four".