27827661 has 8 divisors (see below), whose sum is σ = 37371040. Its totient is φ = 18418032.

The previous prime is 27827633. The next prime is 27827693. The reversal of 27827661 is 16672872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27827661 - 2¹¹ = 27825613 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 (27827461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32950 + ... + 33783.

It is an arithmetic number, because the mean of its divisors is an integer number (4671380).

Almost surely, 2^27827661 is an apocalyptic number.

It is an amenable number.

27827661 is a deficient number, since it is larger than the sum of its proper divisors (9543379).

27827661 is a wasteful number, since it uses less digits than its factorization.

27827661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66875.

The product of its digits is 56448, while the sum is 39.

The square root of 27827661 is about 5275.1929822519. The cubic root of 27827661 is about 303.0346113889.

The spelling of 27827661 in words is "twenty-seven million, eight hundred twenty-seven thousand, six hundred sixty-one".