6463676788 has 6 divisors (see below), whose sum is σ = 11311434386. Its totient is φ = 3231838392.

The previous prime is 6463676767. The next prime is 6463676797. The reversal of 6463676788 is 8876763646.

It can be written as a sum of positive squares in only one way, i.e., 6418893924 + 44782864 = 80118^2 + 6692^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807959595 + ... + 807959602.

Almost surely, 2^6463676788 is an apocalyptic number.

It is an amenable number.

6463676788 is a deficient number, since it is larger than the sum of its proper divisors (4847757598).

6463676788 is a wasteful number, since it uses less digits than its factorization.

6463676788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615919201 (or 1615919199 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 61.

The square root of 6463676788 is about 80396.9948940879. The cubic root of 6463676788 is about 1862.7727547213.

The spelling of 6463676788 in words is "six billion, four hundred sixty-three million, six hundred seventy-six thousand, seven hundred eighty-eight".