27065491 has 2 divisors, whose sum is σ = 27065492. Its totient is φ = 27065490.

The previous prime is 27065477. The next prime is 27065501. The reversal of 27065491 is 19456072.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27065491 - 2⁵ = 27065459 is a prime.

It is not a weakly prime, because it can be changed into another prime (27065471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13532745 + 13532746.

It is an arithmetic number, because the mean of its divisors is an integer number (13532746).

Almost surely, 2^27065491 is an apocalyptic number.

27065491 is a deficient number, since it is larger than the sum of its proper divisors (1).

27065491 is an equidigital number, since it uses as much as digits as its factorization.

27065491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 27065491 is about 5202.4504803025. The cubic root of 27065491 is about 300.2423634065.

It can be divided in two parts, 27065 and 491, that added together give a square (27556 = 166²).

The spelling of 27065491 in words is "twenty-seven million, sixty-five thousand, four hundred ninety-one".