27326681 has 4 divisors (see below), whose sum is σ = 27339264. Its totient is φ = 27314100.

The previous prime is 27326669. The next prime is 27326699. The reversal of 27326681 is 18662372.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 27326681 - 2¹⁰ = 27325657 is a prime.

It is a super-2 number, since 2×27326681² = 1493494988951522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27326281) 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, 2105 + ... + 7686.

It is an arithmetic number, because the mean of its divisors is an integer number (6834816).

Almost surely, 2^27326681 is an apocalyptic number.

It is an amenable number.

27326681 is a deficient number, since it is larger than the sum of its proper divisors (12583).

27326681 is an equidigital number, since it uses as much as digits as its factorization.

27326681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12582.

The product of its digits is 24192, while the sum is 35.

The square root of 27326681 is about 5227.4928024819. The cubic root of 27326681 is about 301.2050824026.

The spelling of 27326681 in words is "twenty-seven million, three hundred twenty-six thousand, six hundred eighty-one".