27717345 has 12 divisors (see below), whose sum is σ = 48043476. Its totient is φ = 14782560.

The previous prime is 27717343. The next prime is 27717383. The reversal of 27717345 is 54371772.

It can be written as a sum of positive squares in 2 ways, for example, as 11532816 + 16184529 = 3396^2 + 4023^2 .

It is not a de Polignac number, because 27717345 - 2¹ = 27717343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27717341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307926 + ... + 308015.

It is an arithmetic number, because the mean of its divisors is an integer number (4003623).

Almost surely, 2^27717345 is an apocalyptic number.

It is an amenable number.

27717345 is a deficient number, since it is larger than the sum of its proper divisors (20326131).

27717345 is a wasteful number, since it uses less digits than its factorization.

27717345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615952 (or 615949 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 27717345 is about 5264.7264886222. The cubic root of 27717345 is about 302.6336453837.

The spelling of 27717345 in words is "twenty-seven million, seven hundred seventeen thousand, three hundred forty-five".