166500671 has 2 divisors, whose sum is σ = 166500672. Its totient is φ = 166500670.

The previous prime is 166500647. The next prime is 166500689. The reversal of 166500671 is 176005661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166500671 - 2¹⁴ = 166484287 is a 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 (166500071) 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, 83250335 + 83250336.

It is an arithmetic number, because the mean of its divisors is an integer number (83250336).

Almost surely, 2^166500671 is an apocalyptic number.

166500671 is a deficient number, since it is larger than the sum of its proper divisors (1).

166500671 is an equidigital number, since it uses as much as digits as its factorization.

166500671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 166500671 is about 12903.5139012596. The cubic root of 166500671 is about 550.1384455884.

The spelling of 166500671 in words is "one hundred sixty-six million, five hundred thousand, six hundred seventy-one".