686104 has 16 divisors (see below), whose sum is σ = 1297800. Its totient is φ = 340032.

The previous prime is 686099. The next prime is 686117. The reversal of 686104 is 401686.

It is a congruent number.

It is an unprimeable number.

686104 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, 804 + ... + 1420.

2⁶⁸⁶¹⁰⁴ is an apocalyptic number.

It is an amenable number.

686104 is a deficient number, since it is larger than the sum of its proper divisors (611696).

686104 is a wasteful number, since it uses less digits than its factorization.

686104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 686104 is about 828.3139501421. The cubic root of 686104 is about 88.1989301310.

The spelling of 686104 in words is "six hundred eighty-six thousand, one hundred four".