328688617 has 2 divisors, whose sum is σ = 328688618. Its totient is φ = 328688616.

The previous prime is 328688599. The next prime is 328688623. The reversal of 328688617 is 716886823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273869401 + 54819216 = 16549^2 + 7404^2 .

It is a cyclic number.

It is not a de Polignac number, because 328688617 - 2¹⁹ = 328164329 is a prime.

It is a super-3 number, since 3×328688617³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (328688417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164344308 + 164344309.

It is an arithmetic number, because the mean of its divisors is an integer number (164344309).

Almost surely, 2^328688617 is an apocalyptic number.

It is an amenable number.

328688617 is a deficient number, since it is larger than the sum of its proper divisors (1).

328688617 is an equidigital number, since it uses as much as digits as its factorization.

328688617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 49.

The square root of 328688617 is about 18129.7715650253. The cubic root of 328688617 is about 690.1257328810.

The spelling of 328688617 in words is "three hundred twenty-eight million, six hundred eighty-eight thousand, six hundred seventeen".