6685983768 has 32 divisors (see below), whose sum is σ = 17166717360. Its totient is φ = 2168426880.

The previous prime is 6685983721. The next prime is 6685983823. The reversal of 6685983768 is 8673895866.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6685983699 and 6685983708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3763743 + ... + 3765518.

Almost surely, 2^6685983768 is an apocalyptic number.

It is an amenable number.

6685983768 is an abundant number, since it is smaller than the sum of its proper divisors (10480733592).

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

6685983768 is a wasteful number, since it uses less digits than its factorization.

6685983768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7529307 (or 7529303 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 66.

The square root of 6685983768 is about 81767.8651305022. The cubic root of 6685983768 is about 1883.8881136759. Note that the first 3 decimals are identical.

The spelling of 6685983768 in words is "six billion, six hundred eighty-five million, nine hundred eighty-three thousand, seven hundred sixty-eight".