6889520777 has 12 divisors (see below), whose sum is σ = 6979004928. Its totient is φ = 6801138000.

The previous prime is 6889520773. The next prime is 6889520791. The reversal of 6889520777 is 7770259886.

It is not a de Polignac number, because 6889520777 - 2² = 6889520773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6889520773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4395848 + ... + 4397414.

It is an arithmetic number, because the mean of its divisors is an integer number (581583744).

Almost surely, 2^6889520777 is an apocalyptic number.

It is an amenable number.

6889520777 is a deficient number, since it is larger than the sum of its proper divisors (89484151).

6889520777 is a wasteful number, since it uses less digits than its factorization.

6889520777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 59.

The square root of 6889520777 is about 83003.1371515559. The cubic root of 6889520777 is about 1902.8139998821.

The spelling of 6889520777 in words is "six billion, eight hundred eighty-nine million, five hundred twenty thousand, seven hundred seventy-seven".