720682988 has 12 divisors (see below), whose sum is σ = 1261662360. Its totient is φ = 360208032.

The previous prime is 720682987. The next prime is 720682993. The reversal of 720682988 is 889286027.

It is not an unprimeable number, because it can be changed into a prime (720682987) 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, 20681 + ... + 43232.

It is an arithmetic number, because the mean of its divisors is an integer number (105138530).

Almost surely, 2^720682988 is an apocalyptic number.

It is an amenable number.

720682988 is a deficient number, since it is larger than the sum of its proper divisors (540979372).

720682988 is a wasteful number, since it uses less digits than its factorization.

720682988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66736 (or 66734 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 720682988 is about 26845.5394432669. The cubic root of 720682988 is about 896.5642621237.

The spelling of 720682988 in words is "seven hundred twenty million, six hundred eighty-two thousand, nine hundred eighty-eight".