27966823 has 2 divisors, whose sum is σ = 27966824. Its totient is φ = 27966822.

The previous prime is 27966821. The next prime is 27966839. The reversal of 27966823 is 32866972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27966823 - 2¹ = 27966821 is a prime.

Together with 27966821, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27966823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27966821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13983411 + 13983412.

It is an arithmetic number, because the mean of its divisors is an integer number (13983412).

Almost surely, 2^27966823 is an apocalyptic number.

27966823 is a deficient number, since it is larger than the sum of its proper divisors (1).

27966823 is an equidigital number, since it uses as much as digits as its factorization.

27966823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 27966823 is about 5288.3667611088. The cubic root of 27966823 is about 303.5389153671.

The spelling of 27966823 in words is "twenty-seven million, nine hundred sixty-six thousand, eight hundred twenty-three".