724906 has 24 divisors (see below), whose sum is σ = 1364580. Its totient is φ = 286272.

The previous prime is 724903. The next prime is 724939. The reversal of 724906 is 609427.

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 99225 = 791^2 + 315^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724901) 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 11 ways as a sum of consecutive naturals, for example, 990 + ... + 1558.

2⁷²⁴⁹⁰⁶ is an apocalyptic number.

724906 is a deficient number, since it is larger than the sum of its proper divisors (639674).

724906 is a wasteful number, since it uses less digits than its factorization.

724906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 724906 is about 851.4141178064. The cubic root of 724906 is about 89.8312062614.

The spelling of 724906 in words is "seven hundred twenty-four thousand, nine hundred six".