68111 has 2 divisors, whose sum is σ = 68112. Its totient is φ = 68110.

The previous prime is 68099. The next prime is 68113. The reversal of 68111 is 11186.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68111 is a prime.

It is a Sophie Germain prime.

Together with 68113, it forms a pair of twin primes.

It is a Chen prime.

68111 is a modest number, since divided by 111 gives 68 as remainder.

It is a plaindrome in base 9 and base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 68111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34055 + 34056.

It is an arithmetic number, because the mean of its divisors is an integer number (34056).

2⁶⁸¹¹¹ is an apocalyptic number.

68111 is the 140-th centered heptagonal number.

68111 is a deficient number, since it is larger than the sum of its proper divisors (1).

68111 is an equidigital number, since it uses as much as digits as its factorization.

68111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 17.

The square root of 68111 is about 260.9808422088. The cubic root of 68111 is about 40.8387479515.

Adding to 68111 its reverse (11186), we get a palindrome (79297).

The spelling of 68111 in words is "sixty-eight thousand, one hundred eleven".