6885143 has 2 divisors, whose sum is σ = 6885144. Its totient is φ = 6885142.

The previous prime is 6885139. The next prime is 6885161. The reversal of 6885143 is 3415886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6885143 - 2² = 6885139 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6885173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3442571 + 3442572.

It is an arithmetic number, because the mean of its divisors is an integer number (3442572).

Almost surely, 2^6885143 is an apocalyptic number.

6885143 is a deficient number, since it is larger than the sum of its proper divisors (1).

6885143 is an equidigital number, since it uses as much as digits as its factorization.

6885143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 6885143 is about 2623.9556017585. The cubic root of 6885143 is about 190.2410882324.

The spelling of 6885143 in words is "six million, eight hundred eighty-five thousand, one hundred forty-three".