722262636 has 24 divisors (see below), whose sum is σ = 1872533040. Its totient is φ = 240754176.

The previous prime is 722262571. The next prime is 722262659. The reversal of 722262636 is 636262227.

722262636 is a `hidden beast` number, since 7 + 2 + 22 + 626 + 3 + 6 = 666.

722262636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×722262636³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 722262636.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3343701 + ... + 3343916.

It is an arithmetic number, because the mean of its divisors is an integer number (78022210).

Almost surely, 2^722262636 is an apocalyptic number.

It is an amenable number.

722262636 is an abundant number, since it is smaller than the sum of its proper divisors (1150270404).

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

722262636 is a wasteful number, since it uses less digits than its factorization.

722262636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687630 (or 6687622 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 722262636 is about 26874.9443906401. The cubic root of 722262636 is about 897.2188367761.

The spelling of 722262636 in words is "seven hundred twenty-two million, two hundred sixty-two thousand, six hundred thirty-six".