6699871 has 2 divisors, whose sum is σ = 6699872. Its totient is φ = 6699870.

The previous prime is 6699859. The next prime is 6699881. The reversal of 6699871 is 1789966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6699871 - 2⁵ = 6699839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6699821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349935 + 3349936.

It is an arithmetic number, because the mean of its divisors is an integer number (3349936).

Almost surely, 2^6699871 is an apocalyptic number.

6699871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6699871 is an equidigital number, since it uses as much as digits as its factorization.

6699871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 46.

The square root of 6699871 is about 2588.4109024651. The cubic root of 6699871 is about 188.5191531875.

The spelling of 6699871 in words is "six million, six hundred ninety-nine thousand, eight hundred seventy-one".