20161027 has 2 divisors, whose sum is σ = 20161028. Its totient is φ = 20161026.

The previous prime is 20161021. The next prime is 20161079. The reversal of 20161027 is 72016102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20161027 - 2³ = 20161019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20160995 and 20161013.

It is not a weakly prime, because it can be changed into another prime (20161021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080513 + 10080514.

It is an arithmetic number, because the mean of its divisors is an integer number (10080514).

Almost surely, 2^20161027 is an apocalyptic number.

20161027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20161027 is an equidigital number, since it uses as much as digits as its factorization.

20161027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 20161027 is about 4490.1032282120. The cubic root of 20161027 is about 272.1683061222.

Adding to 20161027 its reverse (72016102), we get a palindrome (92177129).

The spelling of 20161027 in words is "twenty million, one hundred sixty-one thousand, twenty-seven".