112005689 has 2 divisors, whose sum is σ = 112005690. Its totient is φ = 112005688.

The previous prime is 112005683. The next prime is 112005721. The reversal of 112005689 is 986500211.

It is an a-pointer prime, because the next prime (112005721) can be obtained adding 112005689 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56130064 + 55875625 = 7492^2 + 7475^2 .

It is an emirp because it is prime and its reverse (986500211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112005689 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (112005683) by changing a digit.

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 as a sum of consecutive naturals, namely, 56002844 + 56002845.

It is an arithmetic number, because the mean of its divisors is an integer number (56002845).

Almost surely, 2^112005689 is an apocalyptic number.

It is an amenable number.

112005689 is a deficient number, since it is larger than the sum of its proper divisors (1).

112005689 is an equidigital number, since it uses as much as digits as its factorization.

112005689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 112005689 is about 10583.2740208312. The cubic root of 112005689 is about 482.0366141846.

The spelling of 112005689 in words is "one hundred twelve million, five thousand, six hundred eighty-nine".