111601864 has 32 divisors (see below), whose sum is σ = 229494240. Its totient is φ = 50457600.

The previous prime is 111601859. The next prime is 111601901. The reversal of 111601864 is 468106111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13699 + ... + 20269.

It is an arithmetic number, because the mean of its divisors is an integer number (7171695).

Almost surely, 2^111601864 is an apocalyptic number.

It is an amenable number.

111601864 is an abundant number, since it is smaller than the sum of its proper divisors (117892376).

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

111601864 is a wasteful number, since it uses less digits than its factorization.

111601864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781 (or 6777 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 111601864 is about 10564.1783400319. The cubic root of 111601864 is about 481.4566054145.

Adding to 111601864 its reverse (468106111), we get a palindrome (579707975).

The spelling of 111601864 in words is "one hundred eleven million, six hundred one thousand, eight hundred sixty-four".