6887777886 has 48 divisors (see below), whose sum is σ = 16293549168. Its totient is φ = 2085494400.

The previous prime is 6887777839. The next prime is 6887777891.

6887777886 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239226 + ... + 266466.

It is an arithmetic number, because the mean of its divisors is an integer number (339448941).

Almost surely, 2^6887777886 is an apocalyptic number.

6887777886 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6887777886 is an abundant number, since it is smaller than the sum of its proper divisors (9405771282).

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

6887777886 is a wasteful number, since it uses less digits than its factorization.

6887777886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28537 (or 28534 counting only the distinct ones).

The product of its digits is 354041856, while the sum is 72.

The square root of 6887777886 is about 82992.6375409289. The cubic root of 6887777886 is about 1902.6535302259.

The spelling of 6887777886 in words is "six billion, eight hundred eighty-seven million, seven hundred seventy-seven thousand, eight hundred eighty-six".