111489664 has 64 divisors (see below), whose sum is σ = 260981280. Its totient is φ = 46771200.

The previous prime is 111489649. The next prime is 111489683. The reversal of 111489664 is 466984111.

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

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, 15259 + ... + 21349.

Almost surely, 2^111489664 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 111489664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130490640).

111489664 is an abundant number, since it is smaller than the sum of its proper divisors (149491616).

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

111489664 is a wasteful number, since it uses less digits than its factorization.

111489664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6129 (or 6117 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 111489664 is about 10558.8666058436. The cubic root of 111489664 is about 481.2952056484.

It can be divided in two parts, 11 and 1489664, that multiplied together give a square (16386304 = 4048²).

The spelling of 111489664 in words is "one hundred eleven million, four hundred eighty-nine thousand, six hundred sixty-four".