27605985 has 16 divisors (see below), whose sum is σ = 48185280. Its totient is φ = 13384640.

The previous prime is 27605983. The next prime is 27605989. The reversal of 27605985 is 58950672.

It is not a de Polignac number, because 27605985 - 2¹ = 27605983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27605983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83490 + ... + 83819.

It is an arithmetic number, because the mean of its divisors is an integer number (3011580).

Almost surely, 2^27605985 is an apocalyptic number.

It is an amenable number.

27605985 is a deficient number, since it is larger than the sum of its proper divisors (20579295).

27605985 is a wasteful number, since it uses less digits than its factorization.

27605985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167328.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 27605985 is about 5254.1397963891. The cubic root of 27605985 is about 302.2278042320.

The spelling of 27605985 in words is "twenty-seven million, six hundred five thousand, nine hundred eighty-five".