722122644 has 12 divisors (see below), whose sum is σ = 1684952864. Its totient is φ = 240707544.

The previous prime is 722122633. The next prime is 722122679. The reversal of 722122644 is 446221227.

722122644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×722122644² = 1042922225955101472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30088432 + ... + 30088455.

Almost surely, 2^722122644 is an apocalyptic number.

It is an amenable number.

722122644 is an abundant number, since it is smaller than the sum of its proper divisors (962830220).

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

722122644 is a wasteful number, since it uses less digits than its factorization.

722122644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60176894 (or 60176892 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 722122644 is about 26872.3397567089. The cubic root of 722122644 is about 897.1608654468.

The spelling of 722122644 in words is "seven hundred twenty-two million, one hundred twenty-two thousand, six hundred forty-four".