27085665 has 24 divisors (see below), whose sum is σ = 44573760. Its totient is φ = 14044608.

The previous prime is 27085649. The next prime is 27085673. The reversal of 27085665 is 56658072.

It is a happy number.

It is not a de Polignac number, because 27085665 - 2⁴ = 27085649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19876 + ... + 21194.

It is an arithmetic number, because the mean of its divisors is an integer number (1857240).

Almost surely, 2^27085665 is an apocalyptic number.

It is an amenable number.

27085665 is a deficient number, since it is larger than the sum of its proper divisors (17488095).

27085665 is a wasteful number, since it uses less digits than its factorization.

27085665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 27085665 is about 5204.3890131311. The cubic root of 27085665 is about 300.3169428174.

The spelling of 27085665 in words is "twenty-seven million, eighty-five thousand, six hundred sixty-five".