6811943 has 2 divisors, whose sum is σ = 6811944. Its totient is φ = 6811942.

The previous prime is 6811939. The next prime is 6811949. The reversal of 6811943 is 3491186.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6811943 - 2² = 6811939 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6811949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3405971 + 3405972.

It is an arithmetic number, because the mean of its divisors is an integer number (3405972).

Almost surely, 2^6811943 is an apocalyptic number.

6811943 is a deficient number, since it is larger than the sum of its proper divisors (1).

6811943 is an equidigital number, since it uses as much as digits as its factorization.

6811943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 6811943 is about 2609.9699231983. The cubic root of 6811943 is about 189.5644965331.

The spelling of 6811943 in words is "six million, eight hundred eleven thousand, nine hundred forty-three".