6847871 has 2 divisors, whose sum is σ = 6847872. Its totient is φ = 6847870.

The previous prime is 6847843. The next prime is 6847873. The reversal of 6847871 is 1787486.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6847871 is a prime.

Together with 6847873, 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 (6847873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3423935 + 3423936.

It is an arithmetic number, because the mean of its divisors is an integer number (3423936).

Almost surely, 2^6847871 is an apocalyptic number.

6847871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6847871 is an equidigital number, since it uses as much as digits as its factorization.

6847871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 41.

The square root of 6847871 is about 2616.8437095096. The cubic root of 6847871 is about 189.8971835225.

The spelling of 6847871 in words is "six million, eight hundred forty-seven thousand, eight hundred seventy-one".