166210027 has 2 divisors, whose sum is σ = 166210028. Its totient is φ = 166210026.

The previous prime is 166210019. The next prime is 166210039. The reversal of 166210027 is 720012661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166210027 - 2³ = 166210019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166209983 and 166210010.

It is not a weakly prime, because it can be changed into another prime (166210087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83105013 + 83105014.

It is an arithmetic number, because the mean of its divisors is an integer number (83105014).

Almost surely, 2^166210027 is an apocalyptic number.

166210027 is a deficient number, since it is larger than the sum of its proper divisors (1).

166210027 is an equidigital number, since it uses as much as digits as its factorization.

166210027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 166210027 is about 12892.2467785875. The cubic root of 166210027 is about 549.8181514516.

Adding to 166210027 its reverse (720012661), we get a palindrome (886222688).

The spelling of 166210027 in words is "one hundred sixty-six million, two hundred ten thousand, twenty-seven".