111660173 has 2 divisors, whose sum is σ = 111660174. Its totient is φ = 111660172.

The previous prime is 111660163. The next prime is 111660221. The reversal of 111660173 is 371066111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111555844 + 104329 = 10562^2 + 323^2 .

It is a cyclic number.

It is not a de Polignac number, because 111660173 - 2¹⁴ = 111643789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111660103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55830086 + 55830087.

It is an arithmetic number, because the mean of its divisors is an integer number (55830087).

Almost surely, 2^111660173 is an apocalyptic number.

It is an amenable number.

111660173 is a deficient number, since it is larger than the sum of its proper divisors (1).

111660173 is an equidigital number, since it uses as much as digits as its factorization.

111660173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 111660173 is about 10566.9377304875. The cubic root of 111660173 is about 481.5404402312.

The spelling of 111660173 in words is "one hundred eleven million, six hundred sixty thousand, one hundred seventy-three".