328205687 has 2 divisors, whose sum is σ = 328205688. Its totient is φ = 328205686.

The previous prime is 328205659. The next prime is 328205693. The reversal of 328205687 is 786502823.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 328205687 - 2⁶ = 328205623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328205617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164102843 + 164102844.

It is an arithmetic number, because the mean of its divisors is an integer number (164102844).

Almost surely, 2^328205687 is an apocalyptic number.

328205687 is a deficient number, since it is larger than the sum of its proper divisors (1).

328205687 is an equidigital number, since it uses as much as digits as its factorization.

328205687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 328205687 is about 18116.4479686278. The cubic root of 328205687 is about 689.7875751609.

The spelling of 328205687 in words is "three hundred twenty-eight million, two hundred five thousand, six hundred eighty-seven".