6787871 has 2 divisors, whose sum is σ = 6787872. Its totient is φ = 6787870.

The previous prime is 6787867. The next prime is 6787873. The reversal of 6787871 is 1787876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6787871 - 2² = 6787867 is a prime.

It is a Sophie Germain prime.

Together with 6787873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6787873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3393935 + 3393936.

It is an arithmetic number, because the mean of its divisors is an integer number (3393936).

Almost surely, 2^6787871 is an apocalyptic number.

6787871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6787871 is an equidigital number, since it uses as much as digits as its factorization.

6787871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131712, while the sum is 44.

The square root of 6787871 is about 2605.3542945250. The cubic root of 6787871 is about 189.3409390611.

The spelling of 6787871 in words is "six million, seven hundred eighty-seven thousand, eight hundred seventy-one".