686134 has 8 divisors (see below), whose sum is σ = 1033200. Its totient is φ = 341736.

The previous prime is 686131. The next prime is 686141. The reversal of 686134 is 431686.

686134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (129150).

2⁶⁸⁶¹³⁴ is an apocalyptic number.

686134 is a deficient number, since it is larger than the sum of its proper divisors (347066).

686134 is a wasteful number, since it uses less digits than its factorization.

686134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334.

The product of its digits is 3456, while the sum is 28.

The square root of 686134 is about 828.3320590198. The cubic root of 686134 is about 88.2002156161.

It can be divided in two parts, 686 and 134, that added together give a triangular number (820 = T₄₀).

The spelling of 686134 in words is "six hundred eighty-six thousand, one hundred thirty-four".