868544 has 28 divisors (see below), whose sum is σ = 1770888. Its totient is φ = 422400.

The previous prime is 868537. The next prime is 868559. The reversal of 868544 is 445868.

Its product of digits (30720) is a multiple of the sum of its prime factors (384).

It is an unprimeable number.

868544 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 3 ways as a sum of consecutive naturals, for example, 2459 + ... + 2789.

It is an arithmetic number, because the mean of its divisors is an integer number (63246).

2⁸⁶⁸⁵⁴⁴ 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 868544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885444).

868544 is an abundant number, since it is smaller than the sum of its proper divisors (902344).

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

868544 is a wasteful number, since it uses less digits than its factorization.

868544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 374 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 868544 is about 931.9570805568. The cubic root of 868544 is about 95.4107423293.

The spelling of 868544 in words is "eight hundred sixty-eight thousand, five hundred forty-four".