868684 has 12 divisors (see below), whose sum is σ = 1540000. Its totient is φ = 428688.

The previous prime is 868669. The next prime is 868691. The reversal of 868684 is 486868.

It is a happy number.

It is a super-2 number, since 2×868684² = 1509223783712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059 + ... + 1690.

2⁸⁶⁸⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

868684 is a deficient number, since it is larger than the sum of its proper divisors (671316).

868684 is a wasteful number, since it uses less digits than its factorization.

868684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832 (or 2830 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 868684 is about 932.0321882854. The cubic root of 868684 is about 95.4158684508.

The spelling of 868684 in words is "eight hundred sixty-eight thousand, six hundred eighty-four".