868916 has 6 divisors (see below), whose sum is σ = 1520610. Its totient is φ = 434456.

The previous prime is 868909. The next prime is 868937. The reversal of 868916 is 619868.

It can be written as a sum of positive squares in only one way, i.e., 504100 + 364816 = 710^2 + 604^2 .

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 868916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108611 + ... + 108618.

It is an arithmetic number, because the mean of its divisors is an integer number (253435).

2⁸⁶⁸⁹¹⁶ is an apocalyptic number.

It is an amenable number.

868916 is a deficient number, since it is larger than the sum of its proper divisors (651694).

868916 is a wasteful number, since it uses less digits than its factorization.

868916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217233 (or 217231 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 868916 is about 932.1566391975. The cubic root of 868916 is about 95.4243619540.

The spelling of 868916 in words is "eight hundred sixty-eight thousand, nine hundred sixteen".