166141687 has 2 divisors, whose sum is σ = 166141688. Its totient is φ = 166141686.

The previous prime is 166141589. The next prime is 166141691. The reversal of 166141687 is 786141661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166141687 - 2⁷ = 166141559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166141387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83070843 + 83070844.

It is an arithmetic number, because the mean of its divisors is an integer number (83070844).

Almost surely, 2^166141687 is an apocalyptic number.

166141687 is a deficient number, since it is larger than the sum of its proper divisors (1).

166141687 is an equidigital number, since it uses as much as digits as its factorization.

166141687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 166141687 is about 12889.5960759056. The cubic root of 166141687 is about 549.7427855143.

The spelling of 166141687 in words is "one hundred sixty-six million, one hundred forty-one thousand, six hundred eighty-seven".