686382 has 16 divisors (see below), whose sum is σ = 1384320. Its totient is φ = 226872.

The previous prime is 686363. The next prime is 686417. The reversal of 686382 is 283686.

It is a super-2 number, since 2×686382² = 942240499848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

686382 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423 + ... + 1245.

It is an arithmetic number, because the mean of its divisors is an integer number (86520).

2⁶⁸⁶³⁸² is an apocalyptic number.

686382 is an abundant number, since it is smaller than the sum of its proper divisors (697938).

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

686382 is a wasteful number, since it uses less digits than its factorization.

686382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967.

The product of its digits is 13824, while the sum is 33.

The square root of 686382 is about 828.4817439147. The cubic root of 686382 is about 88.2108408577.

The spelling of 686382 in words is "six hundred eighty-six thousand, three hundred eighty-two".