6681798 has 16 divisors (see below), whose sum is σ = 14848560. Its totient is φ = 2227248.

The previous prime is 6681791. The next prime is 6681817. The reversal of 6681798 is 8971866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61815 + ... + 61922.

It is an arithmetic number, because the mean of its divisors is an integer number (928035).

Almost surely, 2^6681798 is an apocalyptic number.

6681798 is an abundant number, since it is smaller than the sum of its proper divisors (8166762).

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

6681798 is a wasteful number, since it uses less digits than its factorization.

6681798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123748 (or 123742 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 6681798 is about 2584.9174068043. The cubic root of 6681798 is about 188.3494894816.

The spelling of 6681798 in words is "six million, six hundred eighty-one thousand, seven hundred ninety-eight".