328687 has 2 divisors, whose sum is σ = 328688. Its totient is φ = 328686.

The previous prime is 328667. The next prime is 328709. The reversal of 328687 is 786823.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (786823) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328687 is a prime.

328687 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164343 + 164344.

It is an arithmetic number, because the mean of its divisors is an integer number (164344).

2³²⁸⁶⁸⁷ is an apocalyptic number.

328687 is a deficient number, since it is larger than the sum of its proper divisors (1).

328687 is an equidigital number, since it uses as much as digits as its factorization.

328687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 328687 is about 573.3123058159. The cubic root of 328687 is about 69.0124601176.

The spelling of 328687 in words is "three hundred twenty-eight thousand, six hundred eighty-seven".