27420017 has 2 divisors, whose sum is σ = 27420018. Its totient is φ = 27420016.

The previous prime is 27420013. The next prime is 27420037. The reversal of 27420017 is 71002472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22619536 + 4800481 = 4756^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 27420017 - 2² = 27420013 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27419974 and 27420001.

It is not a weakly prime, because it can be changed into another prime (27420013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13710008 + 13710009.

It is an arithmetic number, because the mean of its divisors is an integer number (13710009).

Almost surely, 2^27420017 is an apocalyptic number.

It is an amenable number.

27420017 is a deficient number, since it is larger than the sum of its proper divisors (1).

27420017 is an equidigital number, since it uses as much as digits as its factorization.

27420017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 27420017 is about 5236.4126078834. The cubic root of 27420017 is about 301.5476210204.

Adding to 27420017 its reverse (71002472), we get a palindrome (98422489).

The spelling of 27420017 in words is "twenty-seven million, four hundred twenty thousand, seventeen".