724856 has 16 divisors (see below), whose sum is σ = 1482840. Its totient is φ = 329440.

The previous prime is 724853. The next prime is 724879. The reversal of 724856 is 658427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4031 + ... + 4206.

2⁷²⁴⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

724856 is an abundant number, since it is smaller than the sum of its proper divisors (757984).

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

724856 is a wasteful number, since it uses less digits than its factorization.

724856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8254 (or 8250 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 724856 is about 851.3847543855. The cubic root of 724856 is about 89.8291408609.

The spelling of 724856 in words is "seven hundred twenty-four thousand, eight hundred fifty-six".