27706849 has 2 divisors, whose sum is σ = 27706850. Its totient is φ = 27706848.

The previous prime is 27706843. The next prime is 27706859. The reversal of 27706849 is 94860772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 739600 = 5193^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 27706849 - 2³ = 27706841 is a prime.

It is not a weakly prime, because it can be changed into another prime (27706841) 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, 13853424 + 13853425.

It is an arithmetic number, because the mean of its divisors is an integer number (13853425).

Almost surely, 2^27706849 is an apocalyptic number.

It is an amenable number.

27706849 is a deficient number, since it is larger than the sum of its proper divisors (1).

27706849 is an equidigital number, since it uses as much as digits as its factorization.

27706849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 27706849 is about 5263.7295713211. The cubic root of 27706849 is about 302.5954401398.

The spelling of 27706849 in words is "twenty-seven million, seven hundred six thousand, eight hundred forty-nine".