724999 has 8 divisors (see below), whose sum is σ = 837648. Its totient is φ = 620160.

The previous prime is 724993. The next prime is 725009. The reversal of 724999 is 999427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 724999 - 2³ = 724991 is a prime.

It is a Duffinian number.

724999 is a modest number, since divided by 999 gives 724 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724991) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1752 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (104706).

2⁷²⁴⁹⁹⁹ is an apocalyptic number.

724999 is a deficient number, since it is larger than the sum of its proper divisors (112649).

724999 is a wasteful number, since it uses less digits than its factorization.

724999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905.

The product of its digits is 40824, while the sum is 40.

The square root of 724999 is about 851.4687310759. The cubic root of 724999 is about 89.8350476536.

The spelling of 724999 in words is "seven hundred twenty-four thousand, nine hundred ninety-nine".