2772643 has 2 divisors, whose sum is σ = 2772644. Its totient is φ = 2772642.

The previous prime is 2772631. The next prime is 2772647. The reversal of 2772643 is 3462772.

It is a happy number.

2772643 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 2772643 - 2⁹ = 2772131 is a prime.

It is not a weakly prime, because it can be changed into another prime (2772647) 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, 1386321 + 1386322.

It is an arithmetic number, because the mean of its divisors is an integer number (1386322).

2^2772643 is an apocalyptic number.

2772643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772643 is an equidigital number, since it uses as much as digits as its factorization.

2772643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 31.

The square root of 2772643 is about 1665.1255207942. The cubic root of 2772643 is about 140.4854406717.

The spelling of 2772643 in words is "two million, seven hundred seventy-two thousand, six hundred forty-three".