166896911 has 2 divisors, whose sum is σ = 166896912. Its totient is φ = 166896910.

The previous prime is 166896887. The next prime is 166896959. The reversal of 166896911 is 119698661.

It is a weak prime.

It is an emirp because it is prime and its reverse (119698661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166896911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166899911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83448455 + 83448456.

It is an arithmetic number, because the mean of its divisors is an integer number (83448456).

Almost surely, 2^166896911 is an apocalyptic number.

166896911 is a deficient number, since it is larger than the sum of its proper divisors (1).

166896911 is an equidigital number, since it uses as much as digits as its factorization.

166896911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 47.

The square root of 166896911 is about 12918.8587344239. The cubic root of 166896911 is about 550.5745082225.

The spelling of 166896911 in words is "one hundred sixty-six million, eight hundred ninety-six thousand, nine hundred eleven".