2740223 has 2 divisors, whose sum is σ = 2740224. Its totient is φ = 2740222.

The previous prime is 2740219. The next prime is 2740249. The reversal of 2740223 is 3220472.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2740223 - 2² = 2740219 is a prime.

It is a plaindrome in base 8 and base 16.

It is a junction number, because it is equal to n+sod(n) for n = 2740195 and 2740204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2760223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1370111 + 1370112.

It is an arithmetic number, because the mean of its divisors is an integer number (1370112).

2^2740223 is an apocalyptic number.

2740223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2740223 is an equidigital number, since it uses as much as digits as its factorization.

2740223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 2740223 is about 1655.3618939676. The cubic root of 2740223 is about 139.9357358115.

Adding to 2740223 its reverse (3220472), we get a palindrome (5960695).

Subtracting 2740223 from its reverse (3220472), we obtain a square (480249 = 693²).

The spelling of 2740223 in words is "two million, seven hundred forty thousand, two hundred twenty-three".