111868 has 6 divisors (see below), whose sum is σ = 195776. Its totient is φ = 55932.

The previous prime is 111863. The next prime is 111869. The reversal of 111868 is 868111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111863) by changing a digit.

111868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13980 + ... + 13987.

2¹¹¹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

111868 is a deficient number, since it is larger than the sum of its proper divisors (83908).

111868 is a wasteful number, since it uses less digits than its factorization.

111868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27971 (or 27969 counting only the distinct ones).

The product of its digits is 384, while the sum is 25.

The square root of 111868 is about 334.4667397515. The cubic root of 111868 is about 48.1839010071.

Adding to 111868 its reverse (868111), we get a palindrome (979979).

It can be divided in two parts, 111 and 868, that added together give a palindrome (979).

The spelling of 111868 in words is "one hundred eleven thousand, eight hundred sixty-eight".