20027671 has 2 divisors, whose sum is σ = 20027672. Its totient is φ = 20027670.

The previous prime is 20027663. The next prime is 20027677. The reversal of 20027671 is 17672002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20027671 - 2³ = 20027663 is a prime.

It is a super-2 number, since 2×20027671² = 802215211368482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20027677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013835 + 10013836.

It is an arithmetic number, because the mean of its divisors is an integer number (10013836).

Almost surely, 2^20027671 is an apocalyptic number.

20027671 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027671 is an equidigital number, since it uses as much as digits as its factorization.

20027671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 20027671 is about 4475.2285975132. The cubic root of 20027671 is about 271.5668883873.

Adding to 20027671 its reverse (17672002), we get a palindrome (37699673).

The spelling of 20027671 in words is "twenty million, twenty-seven thousand, six hundred seventy-one".