6820704 has 72 divisors (see below), whose sum is σ = 21169512. Its totient is φ = 2065920.

The previous prime is 6820663. The next prime is 6820711. The reversal of 6820704 is 4070286.

It is a tau number, because it is divible by the number of its divisors (72).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2092 + ... + 4244.

It is an arithmetic number, because the mean of its divisors is an integer number (294021).

Almost surely, 2^6820704 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 6820704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10584756).

6820704 is an abundant number, since it is smaller than the sum of its proper divisors (14348808).

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

6820704 is a wasteful number, since it uses less digits than its factorization.

6820704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180 (or 2169 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 6820704 is about 2611.6477557282. The cubic root of 6820704 is about 189.6457295027.

The spelling of 6820704 in words is "six million, eight hundred twenty thousand, seven hundred four".