722394224639 has 4 divisors (see below), whose sum is σ = 722482233120. Its totient is φ = 722306216160.

The previous prime is 722394224611. The next prime is 722394224701. The reversal of 722394224639 is 936422493227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722394224639 - 2²⁴ = 722377447423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722394224339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43991927 + ... + 44008344.

It is an arithmetic number, because the mean of its divisors is an integer number (180620558280).

Almost surely, 2^722394224639 is an apocalyptic number.

722394224639 is a deficient number, since it is larger than the sum of its proper divisors (88008481).

722394224639 is an equidigital number, since it uses as much as digits as its factorization.

722394224639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88008480.

The product of its digits is 7838208, while the sum is 53.

The spelling of 722394224639 in words is "seven hundred twenty-two billion, three hundred ninety-four million, two hundred twenty-four thousand, six hundred thirty-nine".