6789878988 has 24 divisors (see below), whose sum is σ = 16676896320. Its totient is φ = 2144172240.

The previous prime is 6789878987. The next prime is 6789878989. The reversal of 6789878988 is 8898789876.

It is an interprime number because it is at equal distance from previous prime (6789878987) and next prime (6789878989).

It is a super-2 number, since 2×6789878988² = 92204913343367808288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6789878987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14889858 + ... + 14890313.

It is an arithmetic number, because the mean of its divisors is an integer number (694870680).

Almost surely, 2^6789878988 is an apocalyptic number.

It is an amenable number.

6789878988 is an abundant number, since it is smaller than the sum of its proper divisors (9887017332).

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

6789878988 is a wasteful number, since it uses less digits than its factorization.

6789878988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29780197 (or 29780195 counting only the distinct ones).

The product of its digits is 780337152, while the sum is 78.

The square root of 6789878988 is about 82400.7220113999. The cubic root of 6789878988 is about 1893.5960749926.

The spelling of 6789878988 in words is "six billion, seven hundred eighty-nine million, eight hundred seventy-eight thousand, nine hundred eighty-eight".