27823 has 2 divisors, whose sum is σ = 27824. Its totient is φ = 27822.

The previous prime is 27817. The next prime is 27827. The reversal of 27823 is 32872.

It is a happy number.

It is a strong prime.

27823 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 27823 - 2⁵ = 27791 is a prime.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 27794 and 27803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13911 + 13912.

It is an arithmetic number, because the mean of its divisors is an integer number (13912).

2²⁷⁸²³ is an apocalyptic number.

27823 is a deficient number, since it is larger than the sum of its proper divisors (1).

27823 is an equidigital number, since it uses as much as digits as its factorization.

27823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 22.

The square root of 27823 is about 166.8022781619. The cubic root of 27823 is about 30.3017691495.

The spelling of 27823 in words is "twenty-seven thousand, eight hundred twenty-three".