111606445 has 16 divisors (see below), whose sum is σ = 143408880. Its totient is φ = 83083264.

The previous prime is 111606431. The next prime is 111606491. The reversal of 111606445 is 544606111.

It can be written as a sum of positive squares in 8 ways, for example, as 978121 + 110628324 = 989^2 + 10518^2 .

It is a cyclic number.

It is not a de Polignac number, because 111606445 - 2⁷ = 111606317 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 189 + ... + 14941.

It is an arithmetic number, because the mean of its divisors is an integer number (8963055).

Almost surely, 2^111606445 is an apocalyptic number.

It is an amenable number.

111606445 is a deficient number, since it is larger than the sum of its proper divisors (31802435).

111606445 is a wasteful number, since it uses less digits than its factorization.

111606445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 111606445 is about 10564.3951554266. The cubic root of 111606445 is about 481.4631928867.

The spelling of 111606445 in words is "one hundred eleven million, six hundred six thousand, four hundred forty-five".