726804 has 36 divisors (see below), whose sum is σ = 1979796. Its totient is φ = 223488.

The previous prime is 726797. The next prime is 726809. The reversal of 726804 is 408627.

It can be written as a sum of positive squares in 2 ways, for example, as 90000 + 636804 = 300^2 + 798^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726809) 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, 309 + ... + 1244.

2⁷²⁶⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

726804 is an abundant number, since it is smaller than the sum of its proper divisors (1252992).

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

726804 is a wasteful number, since it uses less digits than its factorization.

726804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1571 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 726804 is about 852.5280054051. The cubic root of 726804 is about 89.9095387352.

The spelling of 726804 in words is "seven hundred twenty-six thousand, eight hundred four".