328709 has 2 divisors, whose sum is σ = 328710. Its totient is φ = 328708.

The previous prime is 328687. The next prime is 328721. The reversal of 328709 is 907823.

328709 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297025 + 31684 = 545^2 + 178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328709 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328709.

It is not a weakly prime, because it can be changed into another prime (328789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164354 + 164355.

It is an arithmetic number, because the mean of its divisors is an integer number (164355).

2³²⁸⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

328709 is a deficient number, since it is larger than the sum of its proper divisors (1).

328709 is an equidigital number, since it uses as much as digits as its factorization.

328709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 328709 is about 573.3314922451. The cubic root of 328709 is about 69.0139998198.

The spelling of 328709 in words is "three hundred twenty-eight thousand, seven hundred nine".