722576 has 10 divisors (see below), whose sum is σ = 1400022. Its totient is φ = 361280.

The previous prime is 722563. The next prime is 722581. The reversal of 722576 is 675227.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 50176 = 820^2 + 224^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722576.

It is an unprimeable number.

722576 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 22565 + ... + 22596.

2⁷²²⁵⁷⁶ is an apocalyptic number.

It is an amenable number.

722576 is a deficient number, since it is larger than the sum of its proper divisors (677446).

722576 is a wasteful number, since it uses less digits than its factorization.

722576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45169 (or 45163 counting only the distinct ones).

The product of its digits is 5880, while the sum is 29.

The square root of 722576 is about 850.0447047068. The cubic root of 722576 is about 89.7348575100.

The spelling of 722576 in words is "seven hundred twenty-two thousand, five hundred seventy-six".