841327681 has 2 divisors, whose sum is σ = 841327682. Its totient is φ = 841327680.

The previous prime is 841327679. The next prime is 841327691. The reversal of 841327681 is 186723148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613800625 + 227527056 = 24775^2 + 15084^2 .

It is a cyclic number.

It is not a de Polignac number, because 841327681 - 2¹ = 841327679 is a prime.

It is a super-2 number, since 2×841327681² = 1415664533633675522, which contains 22 as substring.

Together with 841327679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (841327651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420663840 + 420663841.

It is an arithmetic number, because the mean of its divisors is an integer number (420663841).

Almost surely, 2^841327681 is an apocalyptic number.

It is an amenable number.

841327681 is a deficient number, since it is larger than the sum of its proper divisors (1).

841327681 is an equidigital number, since it uses as much as digits as its factorization.

841327681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 841327681 is about 29005.6491221969. The cubic root of 841327681 is about 944.0356449153.

The spelling of 841327681 in words is "eight hundred forty-one million, three hundred twenty-seven thousand, six hundred eighty-one".