166260071 has 2 divisors, whose sum is σ = 166260072. Its totient is φ = 166260070.

The previous prime is 166260067. The next prime is 166260097. The reversal of 166260071 is 170062661.

It is a weak prime.

It is an emirp because it is prime and its reverse (170062661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166260071 - 2² = 166260067 is a prime.

It is a super-2 number, since 2×166260071² = 55284822417850082, which contains 22 as substring.

It is a Sophie Germain 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 (166260041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83130035 + 83130036.

It is an arithmetic number, because the mean of its divisors is an integer number (83130036).

Almost surely, 2^166260071 is an apocalyptic number.

166260071 is a deficient number, since it is larger than the sum of its proper divisors (1).

166260071 is an equidigital number, since it uses as much as digits as its factorization.

166260071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 166260071 is about 12894.1874889424. The cubic root of 166260071 is about 549.8733273016.

The spelling of 166260071 in words is "one hundred sixty-six million, two hundred sixty thousand, seventy-one".