6791664 has 80 divisors (see below), whose sum is σ = 20177280. Its totient is φ = 1946880.

The previous prime is 6791623. The next prime is 6791677. The reversal of 6791664 is 4661976.

6791664 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×6791664² = 92253399777792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9694 + ... + 10370.

It is an arithmetic number, because the mean of its divisors is an integer number (252216).

Almost surely, 2^6791664 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 6791664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10088640).

6791664 is an abundant number, since it is smaller than the sum of its proper divisors (13385616).

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

6791664 is a wasteful number, since it uses less digits than its factorization.

6791664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 712 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 6791664 is about 2606.0821168950. The cubic root of 6791664 is about 189.3761998203.

The spelling of 6791664 in words is "six million, seven hundred ninety-one thousand, six hundred sixty-four".