722704 has 20 divisors (see below), whose sum is σ = 1483164. Its totient is φ = 339968.

The previous prime is 722669. The next prime is 722713. The reversal of 722704 is 407227.

It can be written as a sum of positive squares in 2 ways, for example, as 518400 + 204304 = 720^2 + 452^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057 + ... + 1600.

2⁷²²⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

722704 is an abundant number, since it is smaller than the sum of its proper divisors (760460).

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

722704 is a wasteful number, since it uses less digits than its factorization.

722704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682 (or 2676 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 722704 is about 850.1199915306. The cubic root of 722704 is about 89.7401558609.

The spelling of 722704 in words is "seven hundred twenty-two thousand, seven hundred four", and thus it is an iban number.