722500864 has 18 divisors (see below), whose sum is σ = 1442179970. Its totient is φ = 361250304.

The previous prime is 722500747. The next prime is 722500879. The reversal of 722500864 is 468005227.

It can be written as a sum of positive squares in only one way, i.e., 707134464 + 15366400 = 26592^2 + 3920^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1410879 + ... + 1411390.

Almost surely, 2^722500864 is an apocalyptic number.

It is an amenable number.

722500864 is a deficient number, since it is larger than the sum of its proper divisors (719679106).

722500864 is an equidigital number, since it uses as much as digits as its factorization.

722500864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822285 (or 2822271 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 722500864 is about 26879.3761832376. The cubic root of 722500864 is about 897.3174708660.

The spelling of 722500864 in words is "seven hundred twenty-two million, five hundred thousand, eight hundred sixty-four".