6814006681 has 2 divisors, whose sum is σ = 6814006682. Its totient is φ = 6814006680.

The previous prime is 6814006679. The next prime is 6814006711. The reversal of 6814006681 is 1866004186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6804765081 + 9241600 = 82491^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 6814006681 - 2¹ = 6814006679 is a prime.

It is a super-2 number, since 2×6814006681² = 92861374097425271522, which contains 22 as substring.

Together with 6814006679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6814006601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3407003340 + 3407003341.

It is an arithmetic number, because the mean of its divisors is an integer number (3407003341).

Almost surely, 2^6814006681 is an apocalyptic number.

It is an amenable number.

6814006681 is a deficient number, since it is larger than the sum of its proper divisors (1).

6814006681 is an equidigital number, since it uses as much as digits as its factorization.

6814006681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 6814006681 is about 82546.9968018219. The cubic root of 6814006681 is about 1895.8363748166.

The spelling of 6814006681 in words is "six billion, eight hundred fourteen million, six thousand, six hundred eighty-one".