868724 has 12 divisors (see below), whose sum is σ = 1572900. Its totient is φ = 419328.

The previous prime is 868697. The next prime is 868727. The reversal of 868724 is 427868.

It can be written as a sum of positive squares in 2 ways, for example, as 446224 + 422500 = 668^2 + 650^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 868724.

It is not an unprimeable number, because it can be changed into a prime (868727) 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, 3629 + ... + 3860.

It is an arithmetic number, because the mean of its divisors is an integer number (131075).

2⁸⁶⁸⁷²⁴ is an apocalyptic number.

It is an amenable number.

868724 is a deficient number, since it is larger than the sum of its proper divisors (704176).

868724 is a wasteful number, since it uses less digits than its factorization.

868724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7522 (or 7520 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 868724 is about 932.0536465247. The cubic root of 868724 is about 95.4173329558.

The spelling of 868724 in words is "eight hundred sixty-eight thousand, seven hundred twenty-four".