2808361 has 2 divisors, whose sum is σ = 2808362. Its totient is φ = 2808360.

The previous prime is 2808359. The next prime is 2808397. The reversal of 2808361 is 1638082.

2808361 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., 2702736 + 105625 = 1644^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2808361 - 2¹ = 2808359 is a prime.

Together with 2808359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2808301) 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, 1404180 + 1404181.

It is an arithmetic number, because the mean of its divisors is an integer number (1404181).

2^2808361 is an apocalyptic number.

It is an amenable number.

2808361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2808361 is an equidigital number, since it uses as much as digits as its factorization.

2808361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2808361 is about 1675.8165174028. The cubic root of 2808361 is about 141.0861268149.

The spelling of 2808361 in words is "two million, eight hundred eight thousand, three hundred sixty-one".