27740017 has 2 divisors, whose sum is σ = 27740018. Its totient is φ = 27740016.

The previous prime is 27739997. The next prime is 27740023. The reversal of 27740017 is 71004772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19219456 + 8520561 = 4384^2 + 2919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27740017 is a prime.

It is not a weakly prime, because it can be changed into another prime (27740917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13870008 + 13870009.

It is an arithmetic number, because the mean of its divisors is an integer number (13870009).

Almost surely, 2^27740017 is an apocalyptic number.

It is an amenable number.

27740017 is a deficient number, since it is larger than the sum of its proper divisors (1).

27740017 is an equidigital number, since it uses as much as digits as its factorization.

27740017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 27740017 is about 5266.8792467646. The cubic root of 27740017 is about 302.7161381341.

Adding to 27740017 its reverse (71004772), we get a palindrome (98744789).

The spelling of 27740017 in words is "twenty-seven million, seven hundred forty thousand, seventeen".