6811889 has 8 divisors (see below), whose sum is σ = 7818048. Its totient is φ = 5814000.

The previous prime is 6811879. The next prime is 6811891. The reversal of 6811889 is 9881186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6811889 - 2⁴ = 6811873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6811829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182 + ... + 3695.

It is an arithmetic number, because the mean of its divisors is an integer number (977256).

Almost surely, 2^6811889 is an apocalyptic number.

It is an amenable number.

6811889 is a deficient number, since it is larger than the sum of its proper divisors (1006159).

6811889 is a wasteful number, since it uses less digits than its factorization.

6811889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135.

The product of its digits is 27648, while the sum is 41.

The square root of 6811889 is about 2609.9595782310. The cubic root of 6811889 is about 189.5639956232.

The spelling of 6811889 in words is "six million, eight hundred eleven thousand, eight hundred eighty-nine".