6680111 has 2 divisors, whose sum is σ = 6680112. Its totient is φ = 6680110.

The previous prime is 6680087. The next prime is 6680119. The reversal of 6680111 is 1110866.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6680111 - 2¹⁰ = 6679087 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6680119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340055 + 3340056.

It is an arithmetic number, because the mean of its divisors is an integer number (3340056).

Almost surely, 2^6680111 is an apocalyptic number.

6680111 is a deficient number, since it is larger than the sum of its proper divisors (1).

6680111 is an equidigital number, since it uses as much as digits as its factorization.

6680111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 6680111 is about 2584.5910701695. The cubic root of 6680111 is about 188.3336368457. Note that the first 3 decimals are identical.

Adding to 6680111 its reverse (1110866), we get a palindrome (7790977).

The spelling of 6680111 in words is "six million, six hundred eighty thousand, one hundred eleven".