68811111 has 12 divisors (see below), whose sum is σ = 101024040. Its totient is φ = 45121680.

The previous prime is 68811097. The next prime is 68811131. The reversal of 68811111 is 11111886.

It is not a de Polignac number, because 68811111 - 2¹⁰ = 68810087 is a prime.

68811111 is a modest number, since divided by 11111 gives 688 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68811131) 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, 62121 + ... + 63218.

It is an arithmetic number, because the mean of its divisors is an integer number (8418670).

Almost surely, 2^68811111 is an apocalyptic number.

68811111 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

68811111 is a deficient number, since it is larger than the sum of its proper divisors (32212929).

68811111 is a wasteful number, since it uses less digits than its factorization.

68811111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125406 (or 125403 counting only the distinct ones).

The product of its digits is 384, while the sum is 27.

The square root of 68811111 is about 8295.2462892912. The cubic root of 68811111 is about 409.7819800618.

Adding to 68811111 its reverse (11111886), we get a palindrome (79922997).

The spelling of 68811111 in words is "sixty-eight million, eight hundred eleven thousand, one hundred eleven".