27306869 has 2 divisors, whose sum is σ = 27306870. Its totient is φ = 27306868.

The previous prime is 27306863. The next prime is 27306871. The reversal of 27306869 is 96860372.

27306869 = 3016² + 3017² + 3018².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23406244 + 3900625 = 4838^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 27306869 - 2¹² = 27302773 is a prime.

It is a super-2 number, since 2×27306869² = 1491330189166322, which contains 22 as substring.

Together with 27306871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27306863) 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, 13653434 + 13653435.

It is an arithmetic number, because the mean of its divisors is an integer number (13653435).

Almost surely, 2^27306869 is an apocalyptic number.

It is an amenable number.

27306869 is a deficient number, since it is larger than the sum of its proper divisors (1).

27306869 is an equidigital number, since it uses as much as digits as its factorization.

27306869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 27306869 is about 5225.5974778010. The cubic root of 27306869 is about 301.1322730016.

The spelling of 27306869 in words is "twenty-seven million, three hundred six thousand, eight hundred sixty-nine".