328679257 has 2 divisors, whose sum is σ = 328679258. Its totient is φ = 328679256.

The previous prime is 328679203. The next prime is 328679279. The reversal of 328679257 is 752976823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273042576 + 55636681 = 16524^2 + 7459^2 .

It is a cyclic number.

It is not a de Polignac number, because 328679257 - 2¹⁹ = 328154969 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328679257.

It is not a weakly prime, because it can be changed into another prime (328679297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164339628 + 164339629.

It is an arithmetic number, because the mean of its divisors is an integer number (164339629).

Almost surely, 2^328679257 is an apocalyptic number.

It is an amenable number.

328679257 is a deficient number, since it is larger than the sum of its proper divisors (1).

328679257 is an equidigital number, since it uses as much as digits as its factorization.

328679257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The square root of 328679257 is about 18129.5134242483. The cubic root of 328679257 is about 690.1191819613.

It can be divided in two parts, 32867 and 9257, that added together give a palindrome (42124).

The spelling of 328679257 in words is "three hundred twenty-eight million, six hundred seventy-nine thousand, two hundred fifty-seven".