27065869 has 2 divisors, whose sum is σ = 27065870. Its totient is φ = 27065868.

The previous prime is 27065867. The next prime is 27065893. The reversal of 27065869 is 96856072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21949225 + 5116644 = 4685^2 + 2262^2 .

It is a cyclic number.

It is not a de Polignac number, because 27065869 - 2¹ = 27065867 is a prime.

It is a super-2 number, since 2×27065869² = 1465122529450322, which contains 22 as substring.

Together with 27065867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27065867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13532934 + 13532935.

It is an arithmetic number, because the mean of its divisors is an integer number (13532935).

Almost surely, 2^27065869 is an apocalyptic number.

It is an amenable number.

27065869 is a deficient number, since it is larger than the sum of its proper divisors (1).

27065869 is an equidigital number, since it uses as much as digits as its factorization.

27065869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 27065869 is about 5202.4868092096. The cubic root of 27065869 is about 300.2437611406.

The spelling of 27065869 in words is "twenty-seven million, sixty-five thousand, eight hundred sixty-nine".