2705849 has 2 divisors, whose sum is σ = 2705850. Its totient is φ = 2705848.

The previous prime is 2705831. The next prime is 2705851. The reversal of 2705849 is 9485072.

It is a happy number.

2705849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2699449 + 6400 = 1643^2 + 80^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2705849 is a prime.

It is a Sophie Germain prime.

Together with 2705851, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2705819) 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, 1352924 + 1352925.

It is an arithmetic number, because the mean of its divisors is an integer number (1352925).

2^2705849 is an apocalyptic number.

It is an amenable number.

2705849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2705849 is an equidigital number, since it uses as much as digits as its factorization.

2705849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2705849 is about 1644.9465036894. The cubic root of 2705849 is about 139.3481430552.

The spelling of 2705849 in words is "two million, seven hundred five thousand, eight hundred forty-nine".