166070071 has 2 divisors, whose sum is σ = 166070072. Its totient is φ = 166070070.

The previous prime is 166070063. The next prime is 166070101. The reversal of 166070071 is 170070661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166070071 - 2³ = 166070063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106070071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83035035 + 83035036.

It is an arithmetic number, because the mean of its divisors is an integer number (83035036).

Almost surely, 2^166070071 is an apocalyptic number.

166070071 is a deficient number, since it is larger than the sum of its proper divisors (1).

166070071 is an equidigital number, since it uses as much as digits as its factorization.

166070071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 166070071 is about 12886.8177219979. The cubic root of 166070071 is about 549.6637845958.

The spelling of 166070071 in words is "one hundred sixty-six million, seventy thousand, seventy-one".