2647943 has 2 divisors, whose sum is σ = 2647944. Its totient is φ = 2647942.

The previous prime is 2647919. The next prime is 2647951. The reversal of 2647943 is 3497462.

2647943 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 2647943 - 2¹⁶ = 2582407 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁹ + 6⁸ + 4 + 7⁷ + 9⁵ + 4⁸ + 3⁹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2647993) 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, 1323971 + 1323972.

It is an arithmetic number, because the mean of its divisors is an integer number (1323972).

2^2647943 is an apocalyptic number.

2647943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647943 is an equidigital number, since it uses as much as digits as its factorization.

2647943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 2647943 is about 1627.2501344292. The cubic root of 2647943 is about 138.3469356473.

The spelling of 2647943 in words is "two million, six hundred forty-seven thousand, nine hundred forty-three".