686125 has 16 divisors (see below), whose sum is σ = 936000. Its totient is φ = 498000.

The previous prime is 686117. The next prime is 686131. The reversal of 686125 is 521686.

686125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 686125 - 2³ = 686117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 686093 and 686102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126 + ... + 1624.

It is an arithmetic number, because the mean of its divisors is an integer number (58500).

2⁶⁸⁶¹²⁵ is an apocalyptic number.

It is an amenable number.

686125 is a deficient number, since it is larger than the sum of its proper divisors (249875).

686125 is a wasteful number, since it uses less digits than its factorization.

686125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 515 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 686125 is about 828.3266263981. The cubic root of 686125 is about 88.1998299745.

It can be divided in two parts, 6861 and 25, that added together give a palindrome (6886).

The spelling of 686125 in words is "six hundred eighty-six thousand, one hundred twenty-five".