2643427 has 2 divisors, whose sum is σ = 2643428. Its totient is φ = 2643426.

The previous prime is 2643397. The next prime is 2643439. The reversal of 2643427 is 7243462.

2643427 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 a de Polignac number, because none of the positive numbers 2^k-2643427 is a prime.

It is a Chen prime.

2643427 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2643395 and 2643404.

It is not a weakly prime, because it can be changed into another prime (2643457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321713 + 1321714.

It is an arithmetic number, because the mean of its divisors is an integer number (1321714).

2^2643427 is an apocalyptic number.

2643427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643427 is an equidigital number, since it uses as much as digits as its factorization.

2643427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 28.

The square root of 2643427 is about 1625.8619252569. The cubic root of 2643427 is about 138.2682418238.

Adding to 2643427 its reverse (7243462), we get a palindrome (9886889).

The spelling of 2643427 in words is "two million, six hundred forty-three thousand, four hundred twenty-seven".