686230 has 16 divisors (see below), whose sum is σ = 1245744. Its totient is φ = 272160.

The previous prime is 686209. The next prime is 686267. The reversal of 686230 is 32686.

686230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×686230² = 941823225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 686195 and 686204.

It is a congruent number.

It is an unprimeable number.

686230 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 7 ways as a sum of consecutive naturals, for example, 1420 + ... + 1840.

It is an arithmetic number, because the mean of its divisors is an integer number (77859).

2⁶⁸⁶²³⁰ is an apocalyptic number.

686230 is a deficient number, since it is larger than the sum of its proper divisors (559514).

686230 is a wasteful number, since it uses less digits than its factorization.

686230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 686230 is about 828.3900047683. The cubic root of 686230 is about 88.2043289165.

The spelling of 686230 in words is "six hundred eighty-six thousand, two hundred thirty".