2768209 has 2 divisors, whose sum is σ = 2768210. Its totient is φ = 2768208.

The previous prime is 2768203. The next prime is 2768231. The reversal of 2768209 is 9028672.

2768209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2471184 + 297025 = 1572^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2768209 - 2³ = 2768201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2768201) 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, 1384104 + 1384105.

It is an arithmetic number, because the mean of its divisors is an integer number (1384105).

2^2768209 is an apocalyptic number.

It is an amenable number.

2768209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2768209 is an equidigital number, since it uses as much as digits as its factorization.

2768209 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 34.

The square root of 2768209 is about 1663.7935569054. The cubic root of 2768209 is about 140.4105127909.

The spelling of 2768209 in words is "two million, seven hundred sixty-eight thousand, two hundred nine".