111818664 has 64 divisors (see below), whose sum is σ = 321336000. Its totient is φ = 35985600.

The previous prime is 111818659. The next prime is 111818683. The reversal of 111818664 is 466818111.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2662 + ... + 15189.

It is an arithmetic number, because the mean of its divisors is an integer number (5020875).

Almost surely, 2^111818664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111818664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160668000).

111818664 is an abundant number, since it is smaller than the sum of its proper divisors (209517336).

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

111818664 is a wasteful number, since it uses less digits than its factorization.

111818664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17895 (or 17885 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 111818664 is about 10574.4344529625. The cubic root of 111818664 is about 481.7681661450.

The spelling of 111818664 in words is "one hundred eleven million, eight hundred eighteen thousand, six hundred sixty-four".