6981111 has 12 divisors (see below), whose sum is σ = 10330320. Its totient is φ = 4540320.

The previous prime is 6981103. The next prime is 6981133. The reversal of 6981111 is 1111896.

It is not a de Polignac number, because 6981111 - 2³ = 6981103 is a prime.

6981111 is a modest number, since divided by 1111 gives 698 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6981181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9091 + ... + 9828.

It is an arithmetic number, because the mean of its divisors is an integer number (860860).

Almost surely, 2^6981111 is an apocalyptic number.

6981111 is a deficient number, since it is larger than the sum of its proper divisors (3349209).

6981111 is a wasteful number, since it uses less digits than its factorization.

6981111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18966 (or 18963 counting only the distinct ones).

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

The square root of 6981111 is about 2642.1792142094. The cubic root of 6981111 is about 191.1208996724.

The spelling of 6981111 in words is "six million, nine hundred eighty-one thousand, one hundred eleven".