327685 has 4 divisors (see below), whose sum is σ = 393228. Its totient is φ = 262144.

The previous prime is 327673. The next prime is 327689. The reversal of 327685 is 586723.

327685 is nontrivially palindromic in base 2, base 4 and base 16.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261121 + 66564 = 511^2 + 258^2 .

It is a 9-Lehmer number, since φ(327685) divides (327685-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 327685 - 2⁷ = 327557 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 3⁷ + 2¹⁰ + 6⁶ + 7² + 8⁶ + 5⁶ .

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (327689) by changing a digit.

In principle, a polygon with 327685 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32764 + ... + 32773.

It is an arithmetic number, because the mean of its divisors is an integer number (98307).

2³²⁷⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

327685 is a deficient number, since it is larger than the sum of its proper divisors (65543).

327685 is an equidigital number, since it uses as much as digits as its factorization.

327685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65542.

The product of its digits is 10080, while the sum is 31.

The square root of 327685 is about 572.4377695436. The cubic root of 327685 is about 68.9422607359.

The spelling of 327685 in words is "three hundred twenty-seven thousand, six hundred eighty-five".