722662660 has 12 divisors (see below), whose sum is σ = 1517591628. Its totient is φ = 289065056.

The previous prime is 722662643. The next prime is 722662667. The reversal of 722662660 is 66266227.

It can be written as a sum of positive squares in 2 ways, for example, as 256448196 + 466214464 = 16014^2 + 21592^2 .

It is not an unprimeable number, because it can be changed into a prime (722662667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18066547 + ... + 18066586.

It is an arithmetic number, because the mean of its divisors is an integer number (126465969).

Almost surely, 2^722662660 is an apocalyptic number.

It is an amenable number.

722662660 is an abundant number, since it is smaller than the sum of its proper divisors (794928968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722662660 is a wasteful number, since it uses less digits than its factorization.

722662660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36133142 (or 36133140 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 722662660 is about 26882.3856828221. The cubic root of 722662660 is about 897.3844472757.

The spelling of 722662660 in words is "seven hundred twenty-two million, six hundred sixty-two thousand, six hundred sixty".