111600 has 90 divisors (see below), whose sum is σ = 399776. Its totient is φ = 28800.

The previous prime is 111599. The next prime is 111611. The reversal of 111600 is 6111.

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3585 + ... + 3615.

2¹¹¹⁶⁰⁰ is an apocalyptic number.

111600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199888).

111600 is an abundant number, since it is smaller than the sum of its proper divisors (288176).

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

111600 is a wasteful number, since it uses less digits than its factorization.

111600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 111600 is about 334.0658617698. The cubic root of 111600 is about 48.1453924933.

Adding to 111600 its reverse (6111), we get a palindrome (117711).

The spelling of 111600 in words is "one hundred eleven thousand, six hundred".