724536 has 48 divisors (see below), whose sum is σ = 2035800. Its totient is φ = 232512.

The previous prime is 724531. The next prime is 724547. The reversal of 724536 is 635427.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1915 + ... + 2261.

2⁷²⁴⁵³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017900).

724536 is an abundant number, since it is smaller than the sum of its proper divisors (1311264).

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

724536 is a wasteful number, since it uses less digits than its factorization.

724536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 381 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 724536 is about 851.1968045053. The cubic root of 724536 is about 89.8159200482.

The spelling of 724536 in words is "seven hundred twenty-four thousand, five hundred thirty-six".