111613986 has 48 divisors (see below), whose sum is σ = 275296320. Its totient is φ = 32350560.

The previous prime is 111613967. The next prime is 111613987. The reversal of 111613986 is 689316111.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111613986.

It is not an unprimeable number, because it can be changed into a prime (111613987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7701 + ... + 16808.

It is an arithmetic number, because the mean of its divisors is an integer number (5735340).

Almost surely, 2^111613986 is an apocalyptic number.

111613986 is an abundant number, since it is smaller than the sum of its proper divisors (163682334).

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

111613986 is a wasteful number, since it uses less digits than its factorization.

111613986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24551 (or 24548 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 111613986 is about 10564.7520557749. The cubic root of 111613986 is about 481.4740364426.

The spelling of 111613986 in words is "one hundred eleven million, six hundred thirteen thousand, nine hundred eighty-six".