27668831 has 2 divisors, whose sum is σ = 27668832. Its totient is φ = 27668830.

The previous prime is 27668821. The next prime is 27668863. The reversal of 27668831 is 13886672.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27668831 - 2²² = 23474527 is a prime.

It is a super-2 number, since 2×27668831² = 1531128417813122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27668801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13834415 + 13834416.

It is an arithmetic number, because the mean of its divisors is an integer number (13834416).

Almost surely, 2^27668831 is an apocalyptic number.

27668831 is a deficient number, since it is larger than the sum of its proper divisors (1).

27668831 is an equidigital number, since it uses as much as digits as its factorization.

27668831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 27668831 is about 5260.1170139076. The cubic root of 27668831 is about 302.4569745058.

The spelling of 27668831 in words is "twenty-seven million, six hundred sixty-eight thousand, eight hundred thirty-one".