304686 has 12 divisors (see below), whose sum is σ = 660192. Its totient is φ = 101556.

The previous prime is 304663. The next prime is 304687. The reversal of 304686 is 686403.

304686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304687) by changing a digit.

304686 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 5 ways as a sum of consecutive naturals, for example, 8446 + ... + 8481.

It is an arithmetic number, because the mean of its divisors is an integer number (55016).

2³⁰⁴⁶⁸⁶ is an apocalyptic number.

304686 is an abundant number, since it is smaller than the sum of its proper divisors (355506).

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

304686 is a wasteful number, since it uses less digits than its factorization.

304686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16935 (or 16932 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 304686 is about 551.9836954114. The cubic root of 304686 is about 67.2900472260.

It can be divided in two parts, 304 and 686, that added together give a triangular number (990 = T₄₄).

The spelling of 304686 in words is "three hundred four thousand, six hundred eighty-six".