685108 has 12 divisors (see below), whose sum is σ = 1219680. Its totient is φ = 336632.

The previous prime is 685103. The next prime is 685109. The reversal of 685108 is 801586.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685103) by changing a digit.

685108 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, 1216 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (101640).

2⁶⁸⁵¹⁰⁸ is an apocalyptic number.

It is an amenable number.

685108 is a deficient number, since it is larger than the sum of its proper divisors (534572).

685108 is a wasteful number, since it uses less digits than its factorization.

685108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2966 (or 2964 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 685108 is about 827.7125104769. The cubic root of 685108 is about 88.1562307362.

The spelling of 685108 in words is "six hundred eighty-five thousand, one hundred eight".