722143663 has 6 divisors (see below), whose sum is σ = 767121776. Its totient is φ = 679664352.

The previous prime is 722143613. The next prime is 722143691. The reversal of 722143663 is 366341227.

722143663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-722143663 is a prime.

It is a super-2 number, since 2×722143663² = 1042982940022115138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722143613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1249095 + ... + 1249672.

Almost surely, 2^722143663 is an apocalyptic number.

722143663 is a deficient number, since it is larger than the sum of its proper divisors (44978113).

722143663 is a wasteful number, since it uses less digits than its factorization.

722143663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498801 (or 2498784 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 722143663 is about 26872.7308437382. The cubic root of 722143663 is about 897.1695699891.

The spelling of 722143663 in words is "seven hundred twenty-two million, one hundred forty-three thousand, six hundred sixty-three".