722263631 has 4 divisors (see below), whose sum is σ = 722318064. Its totient is φ = 722209200.

The previous prime is 722263627. The next prime is 722263639. The reversal of 722263631 is 136362227.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 722263631 - 2² = 722263627 is a prime.

It is a super-2 number, since 2×722263631² = 1043329505330608322, 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 (722263639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7166 + ... + 38676.

It is an arithmetic number, because the mean of its divisors is an integer number (180579516).

Almost surely, 2^722263631 is an apocalyptic number.

722263631 is a deficient number, since it is larger than the sum of its proper divisors (54433).

722263631 is a wasteful number, since it uses less digits than its factorization.

722263631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54432.

The product of its digits is 18144, while the sum is 32.

The square root of 722263631 is about 26874.9629023000. The cubic root of 722263631 is about 897.2192487834.

It can be divided in two parts, 72226 and 3631, that added together give a palindrome (75857).

The spelling of 722263631 in words is "seven hundred twenty-two million, two hundred sixty-three thousand, six hundred thirty-one".