27427717 has 2 divisors, whose sum is σ = 27427718. Its totient is φ = 27427716.

The previous prime is 27427691. The next prime is 27427721. The reversal of 27427717 is 71772472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26532801 + 894916 = 5151^2 + 946^2 .

It is a cyclic number.

It is not a de Polignac number, because 27427717 - 2¹⁵ = 27394949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27427727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13713858 + 13713859.

It is an arithmetic number, because the mean of its divisors is an integer number (13713859).

Almost surely, 2^27427717 is an apocalyptic number.

It is an amenable number.

27427717 is a deficient number, since it is larger than the sum of its proper divisors (1).

27427717 is an equidigital number, since it uses as much as digits as its factorization.

27427717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38416, while the sum is 37.

The square root of 27427717 is about 5237.1477924534. The cubic root of 27427717 is about 301.5758449194.

The spelling of 27427717 in words is "twenty-seven million, four hundred twenty-seven thousand, seven hundred seventeen".