27827663 has 6 divisors (see below), whose sum is σ = 28601496. Its totient is φ = 27074232.

The previous prime is 27827633. The next prime is 27827693. The reversal of 27827663 is 36672872.

It is an interprime number because it is at equal distance from previous prime (27827633) and next prime (27827693).

It is not a de Polignac number, because 27827663 - 2¹⁴ = 27811279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27827663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27827603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8795 + ... + 11532.

It is an arithmetic number, because the mean of its divisors is an integer number (4766916).

Almost surely, 2^27827663 is an apocalyptic number.

27827663 is a deficient number, since it is larger than the sum of its proper divisors (773833).

27827663 is an equidigital number, since it uses as much as digits as its factorization.

27827663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20401 (or 20364 counting only the distinct ones).

The product of its digits is 169344, while the sum is 41.

The square root of 27827663 is about 5275.1931718185. The cubic root of 27827663 is about 303.0346186487.

The spelling of 27827663 in words is "twenty-seven million, eight hundred twenty-seven thousand, six hundred sixty-three".