6840111 has 8 divisors (see below), whose sum is σ = 9136944. Its totient is φ = 4551680.

The previous prime is 6840109. The next prime is 6840157. The reversal of 6840111 is 1110486.

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 6840111 - 2¹ = 6840109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840161) 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, 145 + ... + 3701.

It is an arithmetic number, because the mean of its divisors is an integer number (1142118).

Almost surely, 2^6840111 is an apocalyptic number.

6840111 is a deficient number, since it is larger than the sum of its proper divisors (2296833).

6840111 is a wasteful number, since it uses less digits than its factorization.

6840111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 6840111 is about 2615.3605869937. The cubic root of 6840111 is about 189.8254259829.

Adding to 6840111 its reverse (1110486), we get a palindrome (7950597).

The spelling of 6840111 in words is "six million, eight hundred forty thousand, one hundred eleven".