116166217 has 2 divisors, whose sum is σ = 116166218. Its totient is φ = 116166216.

The previous prime is 116166191. The next prime is 116166223. The reversal of 116166217 is 712661611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95043001 + 21123216 = 9749^2 + 4596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116166217 is a prime.

It is not a weakly prime, because it can be changed into another prime (116166227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58083108 + 58083109.

It is an arithmetic number, because the mean of its divisors is an integer number (58083109).

Almost surely, 2^116166217 is an apocalyptic number.

It is an amenable number.

116166217 is a deficient number, since it is larger than the sum of its proper divisors (1).

116166217 is an equidigital number, since it uses as much as digits as its factorization.

116166217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 31.

The square root of 116166217 is about 10778.0432825258. The cubic root of 116166217 is about 487.9327275022.

The spelling of 116166217 in words is "one hundred sixteen million, one hundred sixty-six thousand, two hundred seventeen".