27968867 has 2 divisors, whose sum is σ = 27968868. Its totient is φ = 27968866.

The previous prime is 27968861. The next prime is 27968869. The reversal of 27968867 is 76886972.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27968867 - 2⁶ = 27968803 is a prime.

Together with 27968869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27968861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13984433 + 13984434.

It is an arithmetic number, because the mean of its divisors is an integer number (13984434).

Almost surely, 2^27968867 is an apocalyptic number.

27968867 is a deficient number, since it is larger than the sum of its proper divisors (1).

27968867 is an equidigital number, since it uses as much as digits as its factorization.

27968867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The square root of 27968867 is about 5288.5600119503. The cubic root of 27968867 is about 303.5463100627.

The spelling of 27968867 in words is "twenty-seven million, nine hundred sixty-eight thousand, eight hundred sixty-seven".