111566887 has 2 divisors, whose sum is σ = 111566888. Its totient is φ = 111566886.

The previous prime is 111566839. The next prime is 111566891. The reversal of 111566887 is 788665111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111566887 - 2⁷ = 111566759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111506887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55783443 + 55783444.

It is an arithmetic number, because the mean of its divisors is an integer number (55783444).

Almost surely, 2^111566887 is an apocalyptic number.

111566887 is a deficient number, since it is larger than the sum of its proper divisors (1).

111566887 is an equidigital number, since it uses as much as digits as its factorization.

111566887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 43.

The square root of 111566887 is about 10562.5227573719. The cubic root of 111566887 is about 481.4063025890.

The spelling of 111566887 in words is "one hundred eleven million, five hundred sixty-six thousand, eight hundred eighty-seven".