724556 has 24 divisors (see below), whose sum is σ = 1468320. Its totient is φ = 306432.

The previous prime is 724553. The next prime is 724567. The reversal of 724556 is 655427.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (724553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050 + ... + 3278.

It is an arithmetic number, because the mean of its divisors is an integer number (61180).

2⁷²⁴⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

724556 is an abundant number, since it is smaller than the sum of its proper divisors (743764).

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

724556 is a wasteful number, since it uses less digits than its factorization.

724556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 351 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 724556 is about 851.2085525886. The cubic root of 724556 is about 89.8167464631.

The spelling of 724556 in words is "seven hundred twenty-four thousand, five hundred fifty-six".