686082 has 16 divisors (see below), whose sum is σ = 1419840. Its totient is φ = 220752.

The previous prime is 686057. The next prime is 686087. The reversal of 686082 is 280686.

It is not an unprimeable number, because it can be changed into a prime (686087) by changing a digit.

686082 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1798 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (88740).

2⁶⁸⁶⁰⁸² is an apocalyptic number.

686082 is an abundant number, since it is smaller than the sum of its proper divisors (733758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686082 is a wasteful number, since it uses less digits than its factorization.

686082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 686082 is about 828.3006700468. The cubic root of 686082 is about 88.1979874181.

The spelling of 686082 in words is "six hundred eighty-six thousand, eighty-two".