2778323 has 2 divisors, whose sum is σ = 2778324. Its totient is φ = 2778322.

The previous prime is 2778299. The next prime is 2778329. The reversal of 2778323 is 3238772.

It is a happy number.

2778323 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 is a cyclic number.

It is not a de Polignac number, because 2778323 - 2⁸ = 2778067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2778323.

It is not a weakly prime, because it can be changed into another prime (2778329) 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, 1389161 + 1389162.

It is an arithmetic number, because the mean of its divisors is an integer number (1389162).

2^2778323 is an apocalyptic number.

2778323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778323 is an equidigital number, since it uses as much as digits as its factorization.

2778323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 32.

The square root of 2778323 is about 1666.8302253079. The cubic root of 2778323 is about 140.5813074466.

The spelling of 2778323 in words is "two million, seven hundred seventy-eight thousand, three hundred twenty-three".