27185985 has 24 divisors (see below), whose sum is σ = 47384064. Its totient is φ = 14418720.

The previous prime is 27185969. The next prime is 27185989. The reversal of 27185985 is 58958172.

It is a happy number.

It is not a de Polignac number, because 27185985 - 2⁴ = 27185969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27185985.

It is not an unprimeable number, because it can be changed into a prime (27185989) by changing a digit.

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, 7014 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (1974336).

Almost surely, 2^27185985 is an apocalyptic number.

It is an amenable number.

27185985 is a deficient number, since it is larger than the sum of its proper divisors (20198079).

27185985 is a wasteful number, since it uses less digits than its factorization.

27185985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365 (or 3362 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 27185985 is about 5214.0181242493. The cubic root of 27185985 is about 300.6872577205.

The spelling of 27185985 in words is "twenty-seven million, one hundred eighty-five thousand, nine hundred eighty-five".