6821080 has 64 divisors (see below), whose sum is σ = 18584640. Its totient is φ = 2199552.

The previous prime is 6821077. The next prime is 6821083. The reversal of 6821080 is 801286.

It is an interprime number because it is at equal distance from previous prime (6821077) and next prime (6821083).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6821083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4044 + ... + 5476.

It is an arithmetic number, because the mean of its divisors is an integer number (290385).

Almost surely, 2^6821080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6821080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9292320).

6821080 is an abundant number, since it is smaller than the sum of its proper divisors (11763560).

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

6821080 is a wasteful number, since it uses less digits than its factorization.

6821080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 6821080 is about 2611.7197399415. The cubic root of 6821080 is about 189.6492142595.

The spelling of 6821080 in words is "six million, eight hundred twenty-one thousand, eighty".