6979871 has 2 divisors, whose sum is σ = 6979872. Its totient is φ = 6979870.

The previous prime is 6979853. The next prime is 6979883. The reversal of 6979871 is 1789796.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6979871 - 2¹⁴ = 6963487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6979801) 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, 3489935 + 3489936.

It is an arithmetic number, because the mean of its divisors is an integer number (3489936).

Almost surely, 2^6979871 is an apocalyptic number.

6979871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6979871 is an equidigital number, since it uses as much as digits as its factorization.

6979871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 47.

The square root of 6979871 is about 2641.9445490017. The cubic root of 6979871 is about 191.1095832335.

The spelling of 6979871 in words is "six million, nine hundred seventy-nine thousand, eight hundred seventy-one".