27845641 has 2 divisors, whose sum is σ = 27845642. Its totient is φ = 27845640.

The previous prime is 27845603. The next prime is 27845647. The reversal of 27845641 is 14654872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25040016 + 2805625 = 5004^2 + 1675^2 .

It is a cyclic number.

It is not a de Polignac number, because 27845641 - 2⁷ = 27845513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27845641.

It is not a weakly prime, because it can be changed into another prime (27845647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13922820 + 13922821.

It is an arithmetic number, because the mean of its divisors is an integer number (13922821).

Almost surely, 2^27845641 is an apocalyptic number.

It is an amenable number.

27845641 is a deficient number, since it is larger than the sum of its proper divisors (1).

27845641 is an equidigital number, since it uses as much as digits as its factorization.

27845641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 37.

The square root of 27845641 is about 5276.8969101168. The cubic root of 27845641 is about 303.0998628817.

The spelling of 27845641 in words is "twenty-seven million, eight hundred forty-five thousand, six hundred forty-one".