722707264 has 28 divisors (see below), whose sum is σ = 1518484644. Its totient is φ = 340097024.

The previous prime is 722707259. The next prime is 722707301. The reversal of 722707264 is 462707227.

It can be written as a sum of positive squares in 2 ways, for example, as 475588864 + 247118400 = 21808^2 + 15720^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331039 + ... + 333214.

Almost surely, 2^722707264 is an apocalyptic number.

It is an amenable number.

722707264 is an abundant number, since it is smaller than the sum of its proper divisors (795777380).

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

722707264 is a wasteful number, since it uses less digits than its factorization.

722707264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664282 (or 664272 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 722707264 is about 26883.2152838904. The cubic root of 722707264 is about 897.4029096070.

Subtracting from 722707264 its sum of digits (37), we obtain a palindrome (722707227).

The spelling of 722707264 in words is "seven hundred twenty-two million, seven hundred seven thousand, two hundred sixty-four".