6424423 has 2 divisors, whose sum is σ = 6424424. Its totient is φ = 6424422.

The previous prime is 6424381. The next prime is 6424427. The reversal of 6424423 is 3244246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6424423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6424427) 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, 3212211 + 3212212.

It is an arithmetic number, because the mean of its divisors is an integer number (3212212).

Almost surely, 2^6424423 is an apocalyptic number.

6424423 is a deficient number, since it is larger than the sum of its proper divisors (1).

6424423 is an equidigital number, since it uses as much as digits as its factorization.

6424423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 25.

The square root of 6424423 is about 2534.6445510170. The cubic root of 6424423 is about 185.8994234062.

Adding to 6424423 its reverse (3244246), we get a palindrome (9668669).

The spelling of 6424423 in words is "six million, four hundred twenty-four thousand, four hundred twenty-three".