6789878986 has 32 divisors (see below), whose sum is σ = 11252183040. Its totient is φ = 3047262000.

The previous prime is 6789878957. The next prime is 6789878987. The reversal of 6789878986 is 6898789876.

It is a super-2 number, since 2×6789878986² = 92204913289048776392, 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 15 ways as a sum of consecutive naturals, for example, 548655 + ... + 560893.

It is an arithmetic number, because the mean of its divisors is an integer number (351630720).

Almost surely, 2^6789878986 is an apocalyptic number.

6789878986 is a deficient number, since it is larger than the sum of its proper divisors (4462304054).

6789878986 is a wasteful number, since it uses less digits than its factorization.

6789878986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12570.

The product of its digits is 585252864, while the sum is 76.

The square root of 6789878986 is about 82400.7219992641. The cubic root of 6789878986 is about 1893.5960748067.

The spelling of 6789878986 in words is "six billion, seven hundred eighty-nine million, eight hundred seventy-eight thousand, nine hundred eighty-six".