722479381 has 16 divisors (see below), whose sum is σ = 814867200. Its totient is φ = 635564160.

The previous prime is 722479337. The next prime is 722479391. The reversal of 722479381 is 183974227.

It is a cyclic number.

It is not a de Polignac number, because 722479381 - 2²⁹ = 185608469 is a prime.

It is a super-2 number, since 2×722479381² = 1043952911940286322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722479391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79720 + ... + 88318.

It is an arithmetic number, because the mean of its divisors is an integer number (50929200).

Almost surely, 2^722479381 is an apocalyptic number.

It is an amenable number.

722479381 is a deficient number, since it is larger than the sum of its proper divisors (92387819).

722479381 is a wasteful number, since it uses less digits than its factorization.

722479381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916.

The product of its digits is 169344, while the sum is 43.

The square root of 722479381 is about 26878.9765616178. The cubic root of 722479381 is about 897.3085770994.

The spelling of 722479381 in words is "seven hundred twenty-two million, four hundred seventy-nine thousand, three hundred eighty-one".