27663313 has 2 divisors, whose sum is σ = 27663314. Its totient is φ = 27663312.

The previous prime is 27663299. The next prime is 27663323. The reversal of 27663313 is 31336672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27217089 + 446224 = 5217^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 27663313 - 2⁹ = 27662801 is a prime.

It is a super-2 number, since 2×27663313² = 1530517772271938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27663323) 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, 13831656 + 13831657.

It is an arithmetic number, because the mean of its divisors is an integer number (13831657).

Almost surely, 2^27663313 is an apocalyptic number.

It is an amenable number.

27663313 is a deficient number, since it is larger than the sum of its proper divisors (1).

27663313 is an equidigital number, since it uses as much as digits as its factorization.

27663313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 31.

The square root of 27663313 is about 5259.5924747075. The cubic root of 27663313 is about 302.4368668193.

Adding to 27663313 its reverse (31336672), we get a palindrome (58999985).

The spelling of 27663313 in words is "twenty-seven million, six hundred sixty-three thousand, three hundred thirteen".