166896127 has 2 divisors, whose sum is σ = 166896128. Its totient is φ = 166896126.

The previous prime is 166896109. The next prime is 166896173. The reversal of 166896127 is 721698661.

It is an a-pointer prime, because the next prime (166896173) can be obtained adding 166896127 to its sum of digits (46).

It is a weak prime.

It is an emirp because it is prime and its reverse (721698661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166896127 - 2⁷ = 166895999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166896187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83448063 + 83448064.

It is an arithmetic number, because the mean of its divisors is an integer number (83448064).

Almost surely, 2^166896127 is an apocalyptic number.

166896127 is a deficient number, since it is larger than the sum of its proper divisors (1).

166896127 is an equidigital number, since it uses as much as digits as its factorization.

166896127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 166896127 is about 12918.8283911506. The cubic root of 166896127 is about 550.5736461113.

The spelling of 166896127 in words is "one hundred sixty-six million, eight hundred ninety-six thousand, one hundred twenty-seven".