27690893 has 2 divisors, whose sum is σ = 27690894. Its totient is φ = 27690892.

The previous prime is 27690863. The next prime is 27690913. The reversal of 27690893 is 39809672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27175369 + 515524 = 5213^2 + 718^2 .

It is a cyclic number.

It is not a de Polignac number, because 27690893 - 2¹⁰ = 27689869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27690863) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13845446 + 13845447.

It is an arithmetic number, because the mean of its divisors is an integer number (13845447).

Almost surely, 2^27690893 is an apocalyptic number.

It is an amenable number.

27690893 is a deficient number, since it is larger than the sum of its proper divisors (1).

27690893 is an equidigital number, since it uses as much as digits as its factorization.

27690893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 27690893 is about 5262.2136976752. The cubic root of 27690893 is about 302.5373421105.

The spelling of 27690893 in words is "twenty-seven million, six hundred ninety thousand, eight hundred ninety-three".