6886947770 has 8 divisors (see below), whose sum is σ = 12396506004. Its totient is φ = 2754779104.

The previous prime is 6886947761. The next prime is 6886947773. The reversal of 6886947770 is 777496886.

It can be written as a sum of positive squares in 2 ways, for example, as 6143894689 + 743053081 = 78383^2 + 27259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6886947773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344347379 + ... + 344347398.

Almost surely, 2^6886947770 is an apocalyptic number.

6886947770 is a deficient number, since it is larger than the sum of its proper divisors (5509558234).

6886947770 is a wasteful number, since it uses less digits than its factorization.

6886947770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688694784.

The product of its (nonzero) digits is 28449792, while the sum is 62.

The square root of 6886947770 is about 82987.6362478171. The cubic root of 6886947770 is about 1902.5770911276.

The spelling of 6886947770 in words is "six billion, eight hundred eighty-six million, nine hundred forty-seven thousand, seven hundred seventy".