27068221 has 2 divisors, whose sum is σ = 27068222. Its totient is φ = 27068220.

The previous prime is 27068191. The next prime is 27068227. The reversal of 27068221 is 12286072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 6320196 = 4555^2 + 2514^2 .

It is a cyclic number.

It is not a de Polignac number, because 27068221 - 2⁵ = 27068189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27068221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27068227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13534110 + 13534111.

It is an arithmetic number, because the mean of its divisors is an integer number (13534111).

Almost surely, 2^27068221 is an apocalyptic number.

It is an amenable number.

27068221 is a deficient number, since it is larger than the sum of its proper divisors (1).

27068221 is an equidigital number, since it uses as much as digits as its factorization.

27068221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 27068221 is about 5202.7128500428. The cubic root of 27068221 is about 300.2524578609.

The spelling of 27068221 in words is "twenty-seven million, sixty-eight thousand, two hundred twenty-one".