27819713 has 2 divisors, whose sum is σ = 27819714. Its totient is φ = 27819712.

The previous prime is 27819707. The next prime is 27819751. The reversal of 27819713 is 31791872.

It is an a-pointer prime, because the next prime (27819751) can be obtained adding 27819713 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22543504 + 5276209 = 4748^2 + 2297^2 .

It is a cyclic number.

It is not a de Polignac number, because 27819713 - 2⁸ = 27819457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27819703) 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, 13909856 + 13909857.

It is an arithmetic number, because the mean of its divisors is an integer number (13909857).

Almost surely, 2^27819713 is an apocalyptic number.

It is an amenable number.

27819713 is a deficient number, since it is larger than the sum of its proper divisors (1).

27819713 is an equidigital number, since it uses as much as digits as its factorization.

27819713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 38.

The square root of 27819713 is about 5274.4395910845. The cubic root of 27819713 is about 303.0057582222.

It can be divided in two parts, 278 and 19713, that added together give a palindrome (19991).

The spelling of 27819713 in words is "twenty-seven million, eight hundred nineteen thousand, seven hundred thirteen".