327660670681 has 2 divisors, whose sum is σ = 327660670682. Its totient is φ = 327660670680.

The previous prime is 327660670669. The next prime is 327660670703. The reversal of 327660670681 is 186076066723.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292988368656 + 34672302025 = 541284^2 + 186205^2 .

It is a cyclic number.

It is not a de Polignac number, because 327660670681 - 2¹¹ = 327660668633 is a prime.

It is a super-2 number, since 2×327660670681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (327660670661) 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, 163830335340 + 163830335341.

It is an arithmetic number, because the mean of its divisors is an integer number (163830335341).

Almost surely, 2^327660670681 is an apocalyptic number.

It is an amenable number.

327660670681 is a deficient number, since it is larger than the sum of its proper divisors (1).

327660670681 is an equidigital number, since it uses as much as digits as its factorization.

327660670681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 327660670681 in words is "three hundred twenty-seven billion, six hundred sixty million, six hundred seventy thousand, six hundred eighty-one".