27847 has 2 divisors, whose sum is σ = 27848. Its totient is φ = 27846.

The previous prime is 27827. The next prime is 27851. The reversal of 27847 is 74872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27847 - 2¹¹ = 25799 is a prime.

It is a Chen prime.

27847 is a lucky number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13923 + 13924.

It is an arithmetic number, because the mean of its divisors is an integer number (13924).

2²⁷⁸⁴⁷ is an apocalyptic number.

27847 is a deficient number, since it is larger than the sum of its proper divisors (1).

27847 is an equidigital number, since it uses as much as digits as its factorization.

27847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 28.

The square root of 27847 is about 166.8742041180. The cubic root of 27847 is about 30.3104793707.

It can be divided in two parts, 278 and 47, that added together give a triangular number (325 = T₂₅).

The spelling of 27847 in words is "twenty-seven thousand, eight hundred forty-seven".