111678 has 16 divisors (see below), whose sum is σ = 255360. Its totient is φ = 31896.

The previous prime is 111667. The next prime is 111697. The reversal of 111678 is 876111.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1288 + ... + 1371.

It is an arithmetic number, because the mean of its divisors is an integer number (15960).

2¹¹¹⁶⁷⁸ is an apocalyptic number.

111678 is an abundant number, since it is smaller than the sum of its proper divisors (143682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111678 is a wasteful number, since it uses less digits than its factorization.

111678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671.

The product of its digits is 336, while the sum is 24.

The square root of 111678 is about 334.1825848245. The cubic root of 111678 is about 48.1566065496.

Adding to 111678 its reverse (876111), we get a palindrome (987789).

It can be divided in two parts, 11167 and 8, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 111678 in words is "one hundred eleven thousand, six hundred seventy-eight".