6698797988 has 12 divisors (see below), whose sum is σ = 11883484620. Its totient is φ = 3303516672.

The previous prime is 6698797939. The next prime is 6698797993. The reversal of 6698797988 is 8897978966.

It can be written as a sum of positive squares in 2 ways, for example, as 1217172544 + 5481625444 = 34888^2 + 74038^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11470253 + ... + 11470836.

It is an arithmetic number, because the mean of its divisors is an integer number (990290385).

Almost surely, 2^6698797988 is an apocalyptic number.

It is an amenable number.

6698797988 is a deficient number, since it is larger than the sum of its proper divisors (5184686632).

6698797988 is a wasteful number, since it uses less digits than its factorization.

6698797988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22941166 (or 22941164 counting only the distinct ones).

The product of its digits is 658409472, while the sum is 77.

The square root of 6698797988 is about 81846.1849324695. The cubic root of 6698797988 is about 1885.0908860999.

The spelling of 6698797988 in words is "six billion, six hundred ninety-eight million, seven hundred ninety-seven thousand, nine hundred eighty-eight".