111668864 has 64 divisors (see below), whose sum is σ = 235448640. Its totient is φ = 52647936.

The previous prime is 111668839. The next prime is 111668867. The reversal of 111668864 is 468866111.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (111668867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244124 + ... + 244580.

It is an arithmetic number, because the mean of its divisors is an integer number (3678885).

Almost surely, 2^111668864 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 111668864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117724320).

111668864 is an abundant number, since it is smaller than the sum of its proper divisors (123779776).

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

111668864 is an equidigital number, since it uses as much as digits as its factorization.

111668864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 565 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 111668864 is about 10567.3489579932. The cubic root of 111668864 is about 481.5529333738.

The spelling of 111668864 in words is "one hundred eleven million, six hundred sixty-eight thousand, eight hundred sixty-four".