27285689 has 2 divisors, whose sum is σ = 27285690. Its totient is φ = 27285688.

The previous prime is 27285679. The next prime is 27285701. The reversal of 27285689 is 98658272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25928464 + 1357225 = 5092^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 27285689 - 2¹⁶ = 27220153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27285649) 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, 13642844 + 13642845.

It is an arithmetic number, because the mean of its divisors is an integer number (13642845).

Almost surely, 2^27285689 is an apocalyptic number.

It is an amenable number.

27285689 is a deficient number, since it is larger than the sum of its proper divisors (1).

27285689 is an equidigital number, since it uses as much as digits as its factorization.

27285689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 27285689 is about 5223.5705221620. The cubic root of 27285689 is about 301.0543972208.

The spelling of 27285689 in words is "twenty-seven million, two hundred eighty-five thousand, six hundred eighty-nine".