166114691 has 2 divisors, whose sum is σ = 166114692. Its totient is φ = 166114690.

The previous prime is 166114679. The next prime is 166114693. The reversal of 166114691 is 196411661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166114691 - 2¹⁰ = 166113667 is a prime.

Together with 166114693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166114693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83057345 + 83057346.

It is an arithmetic number, because the mean of its divisors is an integer number (83057346).

Almost surely, 2^166114691 is an apocalyptic number.

166114691 is a deficient number, since it is larger than the sum of its proper divisors (1).

166114691 is an equidigital number, since it uses as much as digits as its factorization.

166114691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 166114691 is about 12888.5488321998. The cubic root of 166114691 is about 549.7130083997.

The spelling of 166114691 in words is "one hundred sixty-six million, one hundred fourteen thousand, six hundred ninety-one".