722297736 has 40 divisors (see below), whose sum is σ = 2023104270. Its totient is φ = 240765696.

The previous prime is 722297707. The next prime is 722297743. The reversal of 722297736 is 637792227.

It can be written as a sum of positive squares in only one way, i.e., 479872836 + 242424900 = 21906^2 + 15570^2 .

It is a junction number, because it is equal to n+sod(n) for n = 722297691 and 722297700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 556681 + ... + 557976.

Almost surely, 2^722297736 is an apocalyptic number.

It is an amenable number.

722297736 is an abundant number, since it is smaller than the sum of its proper divisors (1300806534).

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

722297736 is a wasteful number, since it uses less digits than its factorization.

722297736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114675 (or 1114662 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 722297736 is about 26875.5974073136. The cubic root of 722297736 is about 897.2333706725.

The spelling of 722297736 in words is "seven hundred twenty-two million, two hundred ninety-seven thousand, seven hundred thirty-six".