720558866668 has 12 divisors (see below), whose sum is σ = 1295058503872. Its totient is φ = 350542151280.

The previous prime is 720558866647. The next prime is 720558866669. The reversal of 720558866668 is 866668855027.

720558866668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (720558866669) 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, 2434320348 + ... + 2434320643.

Almost surely, 2^720558866668 is an apocalyptic number.

It is an amenable number.

720558866668 is a deficient number, since it is larger than the sum of its proper divisors (574499637204).

720558866668 is a wasteful number, since it uses less digits than its factorization.

720558866668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868641032 (or 4868641030 counting only the distinct ones).

The product of its (nonzero) digits is 232243200, while the sum is 67.

The spelling of 720558866668 in words is "seven hundred twenty billion, five hundred fifty-eight million, eight hundred sixty-six thousand, six hundred sixty-eight".