166140097 has 2 divisors, whose sum is σ = 166140098. Its totient is φ = 166140096.

The previous prime is 166140059. The next prime is 166140119. The reversal of 166140097 is 790041661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108243216 + 57896881 = 10404^2 + 7609^2 .

It is a cyclic number.

It is not a de Polignac number, because 166140097 - 2⁷ = 166139969 is a prime.

It is not a weakly prime, because it can be changed into another prime (166140197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83070048 + 83070049.

It is an arithmetic number, because the mean of its divisors is an integer number (83070049).

Almost surely, 2^166140097 is an apocalyptic number.

It is an amenable number.

166140097 is a deficient number, since it is larger than the sum of its proper divisors (1).

166140097 is an equidigital number, since it uses as much as digits as its factorization.

166140097 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 166140097 is about 12889.5343981076. The cubic root of 166140097 is about 549.7410318026.

The spelling of 166140097 in words is "one hundred sixty-six million, one hundred forty thousand, ninety-seven".