860724 has 18 divisors (see below), whose sum is σ = 2175810. Its totient is φ = 286896.

The previous prime is 860701. The next prime is 860747. The reversal of 860724 is 427068.

It is an interprime number because it is at equal distance from previous prime (860701) and next prime (860747).

It can be written as a sum of positive squares in only one way, i.e., 535824 + 324900 = 732^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

860724 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11919 + ... + 11990.

2⁸⁶⁰⁷²⁴ is an apocalyptic number.

It is an amenable number.

860724 is an abundant number, since it is smaller than the sum of its proper divisors (1315086).

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

860724 is a wasteful number, since it uses less digits than its factorization.

860724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23919 (or 23914 counting only the distinct ones).

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

The square root of 860724 is about 927.7521220671. The cubic root of 860724 is about 95.1235327394.

The spelling of 860724 in words is "eight hundred sixty thousand, seven hundred twenty-four".