27997327 has 2 divisors, whose sum is σ = 27997328. Its totient is φ = 27997326.

The previous prime is 27997313. The next prime is 27997331. The reversal of 27997327 is 72379972.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27997327 - 2⁷ = 27997199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27997337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13998663 + 13998664.

It is an arithmetic number, because the mean of its divisors is an integer number (13998664).

Almost surely, 2^27997327 is an apocalyptic number.

27997327 is a deficient number, since it is larger than the sum of its proper divisors (1).

27997327 is an equidigital number, since it uses as much as digits as its factorization.

27997327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 46.

The square root of 27997327 is about 5291.2500413418. The cubic root of 27997327 is about 303.6492340202.

The spelling of 27997327 in words is "twenty-seven million, nine hundred ninety-seven thousand, three hundred twenty-seven".