6811911 has 8 divisors (see below), whose sum is σ = 10091760. Its totient is φ = 4541256.

The previous prime is 6811891. The next prime is 6811913. The reversal of 6811911 is 1191186.

It is not a de Polignac number, because 6811911 - 2⁵ = 6811879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 252293 = 6811911 / (6 + 8 + 1 + 1 + 9 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6811913) 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 in 7 ways as a sum of consecutive naturals, for example, 126120 + ... + 126173.

It is an arithmetic number, because the mean of its divisors is an integer number (1261470).

Almost surely, 2^6811911 is an apocalyptic number.

6811911 is a deficient number, since it is larger than the sum of its proper divisors (3279849).

6811911 is a wasteful number, since it uses less digits than its factorization.

6811911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252302 (or 252296 counting only the distinct ones).

The product of its digits is 432, while the sum is 27.

The square root of 6811911 is about 2609.9637928523. The cubic root of 6811911 is about 189.5641996979.

The spelling of 6811911 in words is "six million, eight hundred eleven thousand, nine hundred eleven".