722022631 has 8 divisors (see below), whose sum is σ = 790592400. Its totient is φ = 653941440.

The previous prime is 722022607. The next prime is 722022641. The reversal of 722022631 is 136220227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 722022631 - 2²⁹ = 185151719 is a prime.

It is a super-2 number, since 2×722022631² = 1042633359352324322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722022596 and 722022605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722022641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119046 + ... + 124963.

It is an arithmetic number, because the mean of its divisors is an integer number (98824050).

Almost surely, 2^722022631 is an apocalyptic number.

722022631 is a deficient number, since it is larger than the sum of its proper divisors (68569769).

722022631 is a wasteful number, since it uses less digits than its factorization.

722022631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244289.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 722022631 is about 26870.4788010932. The cubic root of 722022631 is about 897.1194450164.

Adding to 722022631 its reverse (136220227), we get a palindrome (858242858).

The spelling of 722022631 in words is "seven hundred twenty-two million, twenty-two thousand, six hundred thirty-one".