27089681 has 4 divisors (see below), whose sum is σ = 27241200. Its totient is φ = 26938164.

The previous prime is 27089669. The next prime is 27089701. The reversal of 27089681 is 18698072.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27089681 - 2⁶ = 27089617 is a prime.

It is a super-2 number, since 2×27089681² = 1467701633363522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27089281) 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 3 ways as a sum of consecutive naturals, for example, 75491 + ... + 75848.

It is an arithmetic number, because the mean of its divisors is an integer number (6810300).

Almost surely, 2^27089681 is an apocalyptic number.

It is an amenable number.

27089681 is a deficient number, since it is larger than the sum of its proper divisors (151519).

27089681 is a wasteful number, since it uses less digits than its factorization.

27089681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151518.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 27089681 is about 5204.7748270218. The cubic root of 27089681 is about 300.3317847794.

The spelling of 27089681 in words is "twenty-seven million, eighty-nine thousand, six hundred eighty-one".