722594394 has 24 divisors (see below), whose sum is σ = 1566119412. Its totient is φ = 240788160.

The previous prime is 722594357. The next prime is 722594399. The reversal of 722594394 is 493495227.

722594394 is a `hidden beast` number, since 7 + 2 + 259 + 4 + 394 = 666.

722594394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 631868769 + 90725625 = 25137^2 + 9525^2 .

It is not an unprimeable number, because it can be changed into a prime (722594399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96862 + ... + 104054.

Almost surely, 2^722594394 is an apocalyptic number.

722594394 is an abundant number, since it is smaller than the sum of its proper divisors (843525018).

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

722594394 is a wasteful number, since it uses less digits than its factorization.

722594394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12782 (or 12779 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 722594394 is about 26881.1159366571. The cubic root of 722594394 is about 897.3561893811.

The spelling of 722594394 in words is "seven hundred twenty-two million, five hundred ninety-four thousand, three hundred ninety-four".