166345327 has 2 divisors, whose sum is σ = 166345328. Its totient is φ = 166345326.

The previous prime is 166345321. The next prime is 166345337. The reversal of 166345327 is 723543661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166345327 is a prime.

It is a Chen prime.

It is equal to p_9309934 and since 166345327 and 9309934 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166345321) 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, 83172663 + 83172664.

It is an arithmetic number, because the mean of its divisors is an integer number (83172664).

Almost surely, 2^166345327 is an apocalyptic number.

166345327 is a deficient number, since it is larger than the sum of its proper divisors (1).

166345327 is an equidigital number, since it uses as much as digits as its factorization.

166345327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 37.

The square root of 166345327 is about 12897.4930509770. The cubic root of 166345327 is about 549.9673005353.

Adding to 166345327 its reverse (723543661), we get a palindrome (889888988).

The spelling of 166345327 in words is "one hundred sixty-six million, three hundred forty-five thousand, three hundred twenty-seven".