6439676463 has 24 divisors (see below), whose sum is σ = 10203460176. Its totient is φ = 3881260800.

The previous prime is 6439676443. The next prime is 6439676497. The reversal of 6439676463 is 3646769346.

It is not a de Polignac number, because 6439676463 - 2⁸ = 6439676207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6439676443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161770 + ... + 197607.

It is an arithmetic number, because the mean of its divisors is an integer number (425144174).

Almost surely, 2^6439676463 is an apocalyptic number.

6439676463 is a deficient number, since it is larger than the sum of its proper divisors (3763783713).

6439676463 is a wasteful number, since it uses less digits than its factorization.

6439676463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359575 (or 359572 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 54.

The square root of 6439676463 is about 80247.5947490017. The cubic root of 6439676463 is about 1860.4643368986.

The spelling of 6439676463 in words is "six billion, four hundred thirty-nine million, six hundred seventy-six thousand, four hundred sixty-three".