328591 has 2 divisors, whose sum is σ = 328592. Its totient is φ = 328590.

The previous prime is 328589. The next prime is 328619. The reversal of 328591 is 195823.

It is an a-pointer prime, because the next prime (328619) can be obtained adding 328591 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 328591 - 2¹ = 328589 is a prime.

Together with 328589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164295 + 164296.

It is an arithmetic number, because the mean of its divisors is an integer number (164296).

2³²⁸⁵⁹¹ is an apocalyptic number.

328591 is a deficient number, since it is larger than the sum of its proper divisors (1).

328591 is an equidigital number, since it uses as much as digits as its factorization.

328591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 328591 is about 573.2285757008. The cubic root of 328591 is about 69.0057406132.

It can be divided in two parts, 328 and 591, that added together give a palindrome (919).

The spelling of 328591 in words is "three hundred twenty-eight thousand, five hundred ninety-one".