6681671 has 2 divisors, whose sum is σ = 6681672. Its totient is φ = 6681670.

The previous prime is 6681637. The next prime is 6681677. The reversal of 6681671 is 1761866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6681671 - 2²² = 2487367 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 (6681677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340835 + 3340836.

It is an arithmetic number, because the mean of its divisors is an integer number (3340836).

Almost surely, 2^6681671 is an apocalyptic number.

6681671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6681671 is an equidigital number, since it uses as much as digits as its factorization.

6681671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 6681671 is about 2584.8928411058. The cubic root of 6681671 is about 188.3482961633.

The spelling of 6681671 in words is "six million, six hundred eighty-one thousand, six hundred seventy-one".