27007997 has 2 divisors, whose sum is σ = 27007998. Its totient is φ = 27007996.

The previous prime is 27007993. The next prime is 27008021. The reversal of 27007997 is 79970072.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24492601 + 2515396 = 4949^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 27007997 - 2² = 27007993 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 (27007993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13503998 + 13503999.

It is an arithmetic number, because the mean of its divisors is an integer number (13503999).

Almost surely, 2^27007997 is an apocalyptic number.

It is an amenable number.

27007997 is a deficient number, since it is larger than the sum of its proper divisors (1).

27007997 is an equidigital number, since it uses as much as digits as its factorization.

27007997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 27007997 is about 5196.9218774194. The cubic root of 27007997 is about 300.0296155948.

The spelling of 27007997 in words is "twenty-seven million, seven thousand, nine hundred ninety-seven".