6887767866 has 16 divisors (see below), whose sum is σ = 15743469504. Its totient is φ = 1967933664.

The previous prime is 6887767853. The next prime is 6887767903. The reversal of 6887767866 is 6687677886.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6887767866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81997195 + ... + 81997278.

It is an arithmetic number, because the mean of its divisors is an integer number (983966844).

Almost surely, 2^6887767866 is an apocalyptic number.

6887767866 is an abundant number, since it is smaller than the sum of its proper divisors (8855701638).

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

6887767866 is a wasteful number, since it uses less digits than its factorization.

6887767866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163994485.

The product of its digits is 227598336, while the sum is 69.

The square root of 6887767866 is about 82992.5771741064. The cubic root of 6887767866 is about 1902.6526075966.

The spelling of 6887767866 in words is "six billion, eight hundred eighty-seven million, seven hundred sixty-seven thousand, eight hundred sixty-six".