20170027 has 2 divisors, whose sum is σ = 20170028. Its totient is φ = 20170026.

The previous prime is 20170021. The next prime is 20170049. The reversal of 20170027 is 72007102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20170027 - 2³ = 20170019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20169986 and 20170013.

It is not a weakly prime, because it can be changed into another prime (20170021) 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, 10085013 + 10085014.

It is an arithmetic number, because the mean of its divisors is an integer number (10085014).

Almost surely, 2^20170027 is an apocalyptic number.

20170027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20170027 is an equidigital number, since it uses as much as digits as its factorization.

20170027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 20170027 is about 4491.1053205197. The cubic root of 20170027 is about 272.2087992703.

Adding to 20170027 its reverse (72007102), we get a palindrome (92177129).

The spelling of 20170027 in words is "twenty million, one hundred seventy thousand, twenty-seven".