27659081 has 2 divisors, whose sum is σ = 27659082. Its totient is φ = 27659080.

The previous prime is 27659063. The next prime is 27659083. The reversal of 27659081 is 18095672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19009600 + 8649481 = 4360^2 + 2941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27659081 is a prime.

It is a super-2 number, since 2×27659081² = 1530049523529122, which contains 22 as substring.

Together with 27659083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27659083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13829540 + 13829541.

It is an arithmetic number, because the mean of its divisors is an integer number (13829541).

Almost surely, 2^27659081 is an apocalyptic number.

It is an amenable number.

27659081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27659081 is an equidigital number, since it uses as much as digits as its factorization.

27659081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 27659081 is about 5259.1901467812. The cubic root of 27659081 is about 302.4214435269.

The spelling of 27659081 in words is "twenty-seven million, six hundred fifty-nine thousand, eighty-one".