6689795578 has 16 divisors (see below), whose sum is σ = 10151179200. Its totient is φ = 3306209536.

The previous prime is 6689795573. The next prime is 6689795587. The reversal of 6689795578 is 8755979866.

It is not an unprimeable number, because it can be changed into a prime (6689795573) 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, 61275 + ... + 130897.

It is an arithmetic number, because the mean of its divisors is an integer number (634448700).

Almost surely, 2^6689795578 is an apocalyptic number.

6689795578 is a deficient number, since it is larger than the sum of its proper divisors (3461383622).

6689795578 is a wasteful number, since it uses less digits than its factorization.

6689795578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70181.

The product of its digits is 228614400, while the sum is 70.

The square root of 6689795578 is about 81791.1705381455. The cubic root of 6689795578 is about 1884.2460594697.

The spelling of 6689795578 in words is "six billion, six hundred eighty-nine million, seven hundred ninety-five thousand, five hundred seventy-eight".