27767 has 2 divisors, whose sum is σ = 27768. Its totient is φ = 27766.

The previous prime is 27763. The next prime is 27773. The reversal of 27767 is 76772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27767 - 2² = 27763 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13883 + 13884.

It is an arithmetic number, because the mean of its divisors is an integer number (13884).

2²⁷⁷⁶⁷ is an apocalyptic number.

27767 is a deficient number, since it is larger than the sum of its proper divisors (1).

27767 is an equidigital number, since it uses as much as digits as its factorization.

27767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4116, while the sum is 29.

The square root of 27767 is about 166.6343301964. The cubic root of 27767 is about 30.2814258028.

The spelling of 27767 in words is "twenty-seven thousand, seven hundred sixty-seven".