6111891 has 24 divisors (see below), whose sum is σ = 9575280. Its totient is φ = 3741696.

The previous prime is 6111881. The next prime is 6111913. The reversal of 6111891 is 1981116.

It is not a de Polignac number, because 6111891 - 2²¹ = 4014739 is a prime.

6111891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6111811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6115 + ... + 7043.

It is an arithmetic number, because the mean of its divisors is an integer number (398970).

Almost surely, 2^6111891 is an apocalyptic number.

6111891 is a deficient number, since it is larger than the sum of its proper divisors (3463389).

6111891 is a wasteful number, since it uses less digits than its factorization.

6111891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 992 counting only the distinct ones).

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

The square root of 6111891 is about 2472.2238976274. The cubic root of 6111891 is about 182.8346620952.

The spelling of 6111891 in words is "six million, one hundred eleven thousand, eight hundred ninety-one".