27864673 has 2 divisors, whose sum is σ = 27864674. Its totient is φ = 27864672.

The previous prime is 27864671. The next prime is 27864701. The reversal of 27864673 is 37646872.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16257024 + 11607649 = 4032^2 + 3407^2 .

It is a cyclic number.

It is not a de Polignac number, because 27864673 - 2¹ = 27864671 is a prime.

Together with 27864671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27864671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13932336 + 13932337.

It is an arithmetic number, because the mean of its divisors is an integer number (13932337).

Almost surely, 2^27864673 is an apocalyptic number.

It is an amenable number.

27864673 is a deficient number, since it is larger than the sum of its proper divisors (1).

27864673 is an equidigital number, since it uses as much as digits as its factorization.

27864673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 43.

The square root of 27864673 is about 5278.6999346430. The cubic root of 27864673 is about 303.1689016090.

The spelling of 27864673 in words is "twenty-seven million, eight hundred sixty-four thousand, six hundred seventy-three".