111606606 has 16 divisors (see below), whose sum is σ = 248014800. Its totient is φ = 37202184.

The previous prime is 111606553. The next prime is 111606611. The reversal of 111606606 is 606606111.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 111606606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033341 + ... + 1033448.

It is an arithmetic number, because the mean of its divisors is an integer number (15500925).

Almost surely, 2^111606606 is an apocalyptic number.

111606606 is an abundant number, since it is smaller than the sum of its proper divisors (136408194).

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

111606606 is a wasteful number, since it uses less digits than its factorization.

111606606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066800 (or 2066794 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 111606606 is about 10564.4027753584. The cubic root of 111606606 is about 481.4634244012.

It can be divided in two parts, 11160 and 6606, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 111606606 in words is "one hundred eleven million, six hundred six thousand, six hundred six".