27066565 has 24 divisors (see below), whose sum is σ = 34604064. Its totient is φ = 20311200.

The previous prime is 27066563. The next prime is 27066577. The reversal of 27066565 is 56566072.

It is not a de Polignac number, because 27066565 - 2¹ = 27066563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27066563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206550 + ... + 206680.

It is an arithmetic number, because the mean of its divisors is an integer number (1441836).

Almost surely, 2^27066565 is an apocalyptic number.

It is an amenable number.

27066565 is a deficient number, since it is larger than the sum of its proper divisors (7537499).

27066565 is a wasteful number, since it uses less digits than its factorization.

27066565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 27066565 is about 5202.5536998670. The cubic root of 27066565 is about 300.2463347124.

The spelling of 27066565 in words is "twenty-seven million, sixty-six thousand, five hundred sixty-five".