27120689 has 2 divisors, whose sum is σ = 27120690. Its totient is φ = 27120688.

The previous prime is 27120677. The next prime is 27120701. The reversal of 27120689 is 98602172.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (27120677) and next prime (27120701).

It can be written as a sum of positive squares in only one way, i.e., 22877089 + 4243600 = 4783^2 + 2060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27120689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27126689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13560344 + 13560345.

It is an arithmetic number, because the mean of its divisors is an integer number (13560345).

Almost surely, 2^27120689 is an apocalyptic number.

It is an amenable number.

27120689 is a deficient number, since it is larger than the sum of its proper divisors (1).

27120689 is an equidigital number, since it uses as much as digits as its factorization.

27120689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 27120689 is about 5207.7527783104. The cubic root of 27120689 is about 300.4463319264.

The spelling of 27120689 in words is "twenty-seven million, one hundred twenty thousand, six hundred eighty-nine".