6821968 has 20 divisors (see below), whose sum is σ = 13258080. Its totient is φ = 3400544.

The previous prime is 6821963. The next prime is 6822017. The reversal of 6821968 is 8691286.

It is a self number, because there is not a number n which added to its sum of digits gives 6821968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6821963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10023 + ... + 10681.

It is an arithmetic number, because the mean of its divisors is an integer number (662904).

Almost surely, 2^6821968 is an apocalyptic number.

It is an amenable number.

6821968 is a deficient number, since it is larger than the sum of its proper divisors (6436112).

6821968 is a wasteful number, since it uses less digits than its factorization.

6821968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314 (or 1308 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 6821968 is about 2611.8897373358. The cubic root of 6821968 is about 189.6574437087.

The spelling of 6821968 in words is "six million, eight hundred twenty-one thousand, nine hundred sixty-eight".