8106067691 has 2 divisors, whose sum is σ = 8106067692. Its totient is φ = 8106067690.

The previous prime is 8106067667. The next prime is 8106067693. The reversal of 8106067691 is 1967606018.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8106067691 is a prime.

It is a super-2 number, since 2×8106067691² (a number of 21 digits) contains 22 as substring.

Together with 8106067693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8106067693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4053033845 + 4053033846.

It is an arithmetic number, because the mean of its divisors is an integer number (4053033846).

Almost surely, 2^8106067691 is an apocalyptic number.

8106067691 is a deficient number, since it is larger than the sum of its proper divisors (1).

8106067691 is an equidigital number, since it uses as much as digits as its factorization.

8106067691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 8106067691 is about 90033.7030839008. The cubic root of 8106067691 is about 2008.8001957344.

The spelling of 8106067691 in words is "eight billion, one hundred six million, sixty-seven thousand, six hundred ninety-one".