686097 has 8 divisors (see below), whose sum is σ = 1016480. Its totient is φ = 457380.

The previous prime is 686089. The next prime is 686099. The reversal of 686097 is 790686.

It is not a de Polignac number, because 686097 - 2³ = 686089 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686097.

It is not an unprimeable number, because it can be changed into a prime (686099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12679 + ... + 12732.

It is an arithmetic number, because the mean of its divisors is an integer number (127060).

2⁶⁸⁶⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

686097 is a deficient number, since it is larger than the sum of its proper divisors (330383).

686097 is a wasteful number, since it uses less digits than its factorization.

686097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25420 (or 25414 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 686097 is about 828.3097246803. The cubic root of 686097 is about 88.1986301791.

The spelling of 686097 in words is "six hundred eighty-six thousand, ninety-seven".