722686168 has 16 divisors (see below), whose sum is σ = 1355321880. Its totient is φ = 361267008.

The previous prime is 722686157. The next prime is 722686169. The reversal of 722686168 is 861686227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722686169) 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, 68580 + ... + 78412.

Almost surely, 2^722686168 is an apocalyptic number.

It is an amenable number.

722686168 is a deficient number, since it is larger than the sum of its proper divisors (632635712).

722686168 is a wasteful number, since it uses less digits than its factorization.

722686168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19026 (or 19022 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 722686168 is about 26882.8229172459. The cubic root of 722686168 is about 897.3941777193.

The spelling of 722686168 in words is "seven hundred twenty-two million, six hundred eighty-six thousand, one hundred sixty-eight".