6886216777 has 16 divisors (see below), whose sum is σ = 7575321600. Its totient is φ = 6207809040.

The previous prime is 6886216763. The next prime is 6886216789. The reversal of 6886216777 is 7776126886.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6886216777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6886219777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802174 + ... + 810712.

It is an arithmetic number, because the mean of its divisors is an integer number (473457600).

Almost surely, 2^6886216777 is an apocalyptic number.

It is an amenable number.

6886216777 is a deficient number, since it is larger than the sum of its proper divisors (689104823).

6886216777 is a wasteful number, since it uses less digits than its factorization.

6886216777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156.

The product of its digits is 9483264, while the sum is 58.

The square root of 6886216777 is about 82983.2319025958. The cubic root of 6886216777 is about 1902.5097744298.

The spelling of 6886216777 in words is "six billion, eight hundred eighty-six million, two hundred sixteen thousand, seven hundred seventy-seven".