328686 has 16 divisors (see below), whose sum is σ = 680400. Its totient is φ = 105728.

The previous prime is 328667. The next prime is 328687. The reversal of 328686 is 686823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (42525).

2³²⁸⁶⁸⁶ is an apocalyptic number.

328686 is an abundant number, since it is smaller than the sum of its proper divisors (351714).

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

328686 is a wasteful number, since it uses less digits than its factorization.

328686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923.

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

The square root of 328686 is about 573.3114336903. The cubic root of 328686 is about 69.0123901296.

The spelling of 328686 in words is "three hundred twenty-eight thousand, six hundred eighty-six".