166229071 has 2 divisors, whose sum is σ = 166229072. Its totient is φ = 166229070.

The previous prime is 166229069. The next prime is 166229093. The reversal of 166229071 is 170922661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166229071 - 2¹ = 166229069 is a prime.

Together with 166229069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166229051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83114535 + 83114536.

It is an arithmetic number, because the mean of its divisors is an integer number (83114536).

Almost surely, 2^166229071 is an apocalyptic number.

166229071 is a deficient number, since it is larger than the sum of its proper divisors (1).

166229071 is an equidigital number, since it uses as much as digits as its factorization.

166229071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 166229071 is about 12892.9853408743. The cubic root of 166229071 is about 549.8391496573.

The spelling of 166229071 in words is "one hundred sixty-six million, two hundred twenty-nine thousand, seventy-one".