724972 has 6 divisors (see below), whose sum is σ = 1268708. Its totient is φ = 362484.

The previous prime is 724967. The next prime is 724991. The reversal of 724972 is 279427.

It is a happy number.

It is an unprimeable number.

724972 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90618 + ... + 90625.

2⁷²⁴⁹⁷² is an apocalyptic number.

It is an amenable number.

724972 is a deficient number, since it is larger than the sum of its proper divisors (543736).

724972 is a wasteful number, since it uses less digits than its factorization.

724972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181247 (or 181245 counting only the distinct ones).

The product of its digits is 7056, while the sum is 31.

The square root of 724972 is about 851.4528759714. The cubic root of 724972 is about 89.8339324446.

The spelling of 724972 in words is "seven hundred twenty-four thousand, nine hundred seventy-two".