868504 has 32 divisors (see below), whose sum is σ = 2005920. Its totient is φ = 343296.

The previous prime is 868493. The next prime is 868529. The reversal of 868504 is 405868.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

868504 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (62685).

2⁸⁶⁸⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002960).

868504 is an abundant number, since it is smaller than the sum of its proper divisors (1137416).

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

868504 is a wasteful number, since it uses less digits than its factorization.

868504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 868504 is about 931.9356200940. The cubic root of 868504 is about 95.4092776219.

The spelling of 868504 in words is "eight hundred sixty-eight thousand, five hundred four".