722213636 has 24 divisors (see below), whose sum is σ = 1350259680. Its totient is φ = 336992832.

The previous prime is 722213629. The next prime is 722213707. The reversal of 722213636 is 636312227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65825 + ... + 76008.

It is an arithmetic number, because the mean of its divisors is an integer number (56260820).

Almost surely, 2^722213636 is an apocalyptic number.

722213636 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

722213636 is a deficient number, since it is larger than the sum of its proper divisors (628046044).

722213636 is a wasteful number, since it uses less digits than its factorization.

722213636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141923 (or 141921 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 722213636 is about 26874.0327453845. The cubic root of 722213636 is about 897.1985465036.

It can be divided in two parts, 72221 and 3636, that added together give a palindrome (75857).

The spelling of 722213636 in words is "seven hundred twenty-two million, two hundred thirteen thousand, six hundred thirty-six".