720644130968 has 16 divisors (see below), whose sum is σ = 1422323943000. Its totient is φ = 341357746176.

The previous prime is 720644130967. The next prime is 720644130977. The reversal of 720644130968 is 869031446027.

720644130968 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 not an unprimeable number, because it can be changed into a prime (720644130967) 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, 2370539753 + ... + 2370540056.

Almost surely, 2^720644130968 is an apocalyptic number.

It is an amenable number.

720644130968 is a deficient number, since it is larger than the sum of its proper divisors (701679812032).

720644130968 is a wasteful number, since it uses less digits than its factorization.

720644130968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741079834 (or 4741079830 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 720644130968 in words is "seven hundred twenty billion, six hundred forty-four million, one hundred thirty thousand, nine hundred sixty-eight".