722722894 has 12 divisors (see below), whose sum is σ = 1091317752. Its totient is φ = 358953420.

The previous prime is 722722879. The next prime is 722722907. The reversal of 722722894 is 498227227.

It is a self number, because there is not a number n which added to its sum of digits gives 722722894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 490579 + ... + 492049.

It is an arithmetic number, because the mean of its divisors is an integer number (90943146).

Almost surely, 2^722722894 is an apocalyptic number.

722722894 is a deficient number, since it is larger than the sum of its proper divisors (368594858).

722722894 is an equidigital number, since it uses as much as digits as its factorization.

722722894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111 (or 1640 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 722722894 is about 26883.5059841532. The cubic root of 722722894 is about 897.4093789421.

The spelling of 722722894 in words is "seven hundred twenty-two million, seven hundred twenty-two thousand, eight hundred ninety-four".