6988668897 has 32 divisors (see below), whose sum is σ = 10869120000. Its totient is φ = 3911802048.

The previous prime is 6988668889. The next prime is 6988668913. The reversal of 6988668897 is 7988668896.

It is not a de Polignac number, because 6988668897 - 2³ = 6988668889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6988668497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237979 + ... + 265727.

It is an arithmetic number, because the mean of its divisors is an integer number (339660000).

Almost surely, 2^6988668897 is an apocalyptic number.

6988668897 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

6988668897 is a deficient number, since it is larger than the sum of its proper divisors (3880451103).

6988668897 is a wasteful number, since it uses less digits than its factorization.

6988668897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28005.

The product of its digits is 501645312, while the sum is 75.

The square root of 6988668897 is about 83598.2589352195. The cubic root of 6988668897 is about 1911.8984529417.

Subtracting 6988668897 from its reverse (7988668896), we obtain a palindrome (999999999).

The spelling of 6988668897 in words is "six billion, nine hundred eighty-eight million, six hundred sixty-eight thousand, eight hundred ninety-seven".