6386776836 has 48 divisors (see below), whose sum is σ = 16817855040. Its totient is φ = 1868648320.

The previous prime is 6386776817. The next prime is 6386776841.

6386776836 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6386776836.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 830391 + ... + 838046.

It is an arithmetic number, because the mean of its divisors is an integer number (350371980).

Almost surely, 2^6386776836 is an apocalyptic number.

6386776836 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6386776836 is an abundant number, since it is smaller than the sum of its proper divisors (10431078204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6386776836 is a wasteful number, since it uses less digits than its factorization.

6386776836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668484 (or 1668482 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 60.

The square root of 6386776836 is about 79917.3124923505. The cubic root of 6386776836 is about 1855.3559749172.

The spelling of 6386776836 in words is "six billion, three hundred eighty-six million, seven hundred seventy-six thousand, eight hundred thirty-six".