805724 has 12 divisors (see below), whose sum is σ = 1420104. Its totient is φ = 399984.

The previous prime is 805723. The next prime is 805729. The reversal of 805724 is 427508.

805724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 805693 and 805702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (118342).

2⁸⁰⁵⁷²⁴ is an apocalyptic number.

It is an amenable number.

805724 is a deficient number, since it is larger than the sum of its proper divisors (614380).

805724 is a wasteful number, since it uses less digits than its factorization.

805724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 805724 is about 897.6213009950. The cubic root of 805724 is about 93.0526545006.

The spelling of 805724 in words is "eight hundred five thousand, seven hundred twenty-four".