27974717 has 2 divisors, whose sum is σ = 27974718. Its totient is φ = 27974716.

The previous prime is 27974699. The next prime is 27974719. The reversal of 27974717 is 71747972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20016676 + 7958041 = 4474^2 + 2821^2 .

It is a cyclic number.

It is not a de Polignac number, because 27974717 - 2⁸ = 27974461 is a prime.

Together with 27974719, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1739987 and since 27974717 and 1739987 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27974719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13987358 + 13987359.

It is an arithmetic number, because the mean of its divisors is an integer number (13987359).

Almost surely, 2^27974717 is an apocalyptic number.

It is an amenable number.

27974717 is a deficient number, since it is larger than the sum of its proper divisors (1).

27974717 is an equidigital number, since it uses as much as digits as its factorization.

27974717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172872, while the sum is 44.

The square root of 27974717 is about 5289.1130636431. The cubic root of 27974717 is about 303.5674719511.

The spelling of 27974717 in words is "twenty-seven million, nine hundred seventy-four thousand, seven hundred seventeen".