27797 has 12 divisors (see below), whose sum is σ = 36576. Its totient is φ = 20520.

The previous prime is 27793. The next prime is 27799. The reversal of 27797 is 79772.

It is not a de Polignac number, because 27797 - 2² = 27793 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1454 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (3048).

2²⁷⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

27797 is a deficient number, since it is larger than the sum of its proper divisors (8779).

27797 is a wasteful number, since it uses less digits than its factorization.

27797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56 (or 37 counting only the distinct ones).

The product of its digits is 6174, while the sum is 32.

The square root of 27797 is about 166.7243233605. The cubic root of 27797 is about 30.2923274223.

The spelling of 27797 in words is "twenty-seven thousand, seven hundred ninety-seven".