166540327 has 2 divisors, whose sum is σ = 166540328. Its totient is φ = 166540326.

The previous prime is 166540267. The next prime is 166540331. The reversal of 166540327 is 723045661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166540327 - 2¹¹ = 166538279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166540292 and 166540301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166544327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83270163 + 83270164.

It is an arithmetic number, because the mean of its divisors is an integer number (83270164).

Almost surely, 2^166540327 is an apocalyptic number.

166540327 is a deficient number, since it is larger than the sum of its proper divisors (1).

166540327 is an equidigital number, since it uses as much as digits as its factorization.

166540327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 166540327 is about 12905.0504454651. The cubic root of 166540327 is about 550.1821182020.

Adding to 166540327 its reverse (723045661), we get a palindrome (889585988).

The spelling of 166540327 in words is "one hundred sixty-six million, five hundred forty thousand, three hundred twenty-seven".