286686 has 16 divisors (see below), whose sum is σ = 637200. Its totient is φ = 95544.

The previous prime is 286673. The next prime is 286687. The reversal of 286686 is 686682.

It is a self number, because there is not a number n which added to its sum of digits gives 286686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2601 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (39825).

2²⁸⁶⁶⁸⁶ is an apocalyptic number.

286686 is an abundant number, since it is smaller than the sum of its proper divisors (350514).

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

286686 is a wasteful number, since it uses less digits than its factorization.

286686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320 (or 5314 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 286686 is about 535.4306677806. The cubic root of 286686 is about 65.9379582263.

The spelling of 286686 in words is "two hundred eighty-six thousand, six hundred eighty-six".