686105 has 8 divisors (see below), whose sum is σ = 940992. Its totient is φ = 470448.

The previous prime is 686099. The next prime is 686117. The reversal of 686105 is 501686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 686105 - 2⁴ = 686089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9767 + ... + 9836.

It is an arithmetic number, because the mean of its divisors is an integer number (117624).

2⁶⁸⁶¹⁰⁵ is an apocalyptic number.

It is an amenable number.

686105 is a deficient number, since it is larger than the sum of its proper divisors (254887).

686105 is a wasteful number, since it uses less digits than its factorization.

686105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19615.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 686105 is about 828.3145537777. The cubic root of 686105 is about 88.1989729811.

The spelling of 686105 in words is "six hundred eighty-six thousand, one hundred five".