2766623 has 2 divisors, whose sum is σ = 2766624. Its totient is φ = 2766622.

The previous prime is 2766611. The next prime is 2766637. The reversal of 2766623 is 3266672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2766623 - 2⁸ = 2766367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2766623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2763623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1383311 + 1383312.

It is an arithmetic number, because the mean of its divisors is an integer number (1383312).

2^2766623 is an apocalyptic number.

2766623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2766623 is an equidigital number, since it uses as much as digits as its factorization.

2766623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 2766623 is about 1663.3168669860. The cubic root of 2766623 is about 140.3836923671.

The spelling of 2766623 in words is "two million, seven hundred sixty-six thousand, six hundred twenty-three".