327689506673 has 2 divisors, whose sum is σ = 327689506674. Its totient is φ = 327689506672.

The previous prime is 327689506649. The next prime is 327689506687. The reversal of 327689506673 is 376605986723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318753963889 + 8935542784 = 564583^2 + 94528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-327689506673 is a prime.

It is a super-2 number, since 2×327689506673² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (327689506373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163844753336 + 163844753337.

It is an arithmetic number, because the mean of its divisors is an integer number (163844753337).

Almost surely, 2^327689506673 is an apocalyptic number.

It is an amenable number.

327689506673 is a deficient number, since it is larger than the sum of its proper divisors (1).

327689506673 is an equidigital number, since it uses as much as digits as its factorization.

327689506673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68584320, while the sum is 62.

The spelling of 327689506673 in words is "three hundred twenty-seven billion, six hundred eighty-nine million, five hundred six thousand, six hundred seventy-three".