868776 has 32 divisors (see below), whose sum is σ = 2216160. Its totient is φ = 283712.

The previous prime is 868771. The next prime is 868783. The reversal of 868776 is 677868.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (868771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (69255).

2⁸⁶⁸⁷⁷⁶ is an apocalyptic number.

868776 is the 590-th centered pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1108080).

868776 is an abundant number, since it is smaller than the sum of its proper divisors (1347384).

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

868776 is a wasteful number, since it uses less digits than its factorization.

868776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 741 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 868776 is about 932.0815414973. The cubic root of 868776 is about 95.4192367451.

The spelling of 868776 in words is "eight hundred sixty-eight thousand, seven hundred seventy-six".