6438463 has 2 divisors, whose sum is σ = 6438464. Its totient is φ = 6438462.

The previous prime is 6438457. The next prime is 6438539. The reversal of 6438463 is 3648346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6438463 - 2⁵ = 6438431 is a prime.

6438463 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6438403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219231 + 3219232.

It is an arithmetic number, because the mean of its divisors is an integer number (3219232).

Almost surely, 2^6438463 is an apocalyptic number.

6438463 is a deficient number, since it is larger than the sum of its proper divisors (1).

6438463 is an equidigital number, since it uses as much as digits as its factorization.

6438463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 34.

The square root of 6438463 is about 2537.4126585954. The cubic root of 6438463 is about 186.0347470445.

The spelling of 6438463 in words is "six million, four hundred thirty-eight thousand, four hundred sixty-three".