328745671 has 2 divisors, whose sum is σ = 328745672. Its totient is φ = 328745670.

The previous prime is 328745663. The next prime is 328745689. The reversal of 328745671 is 176547823.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 328745671 - 2³ = 328745663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328745071) 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, 164372835 + 164372836.

It is an arithmetic number, because the mean of its divisors is an integer number (164372836).

Almost surely, 2^328745671 is an apocalyptic number.

328745671 is a deficient number, since it is larger than the sum of its proper divisors (1).

328745671 is an equidigital number, since it uses as much as digits as its factorization.

328745671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 43.

The square root of 328745671 is about 18131.3449859628. The cubic root of 328745671 is about 690.1656614066.

The spelling of 328745671 in words is "three hundred twenty-eight million, seven hundred forty-five thousand, six hundred seventy-one".