6809790 has 64 divisors (see below), whose sum is σ = 18547200. Its totient is φ = 1586304.

The previous prime is 6809779. The next prime is 6809797. The reversal of 6809790 is 979086.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6951 + ... + 7869.

It is an arithmetic number, because the mean of its divisors is an integer number (289800).

Almost surely, 2^6809790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6809790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9273600).

6809790 is an abundant number, since it is smaller than the sum of its proper divisors (11737410).

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

6809790 is a wasteful number, since it uses less digits than its factorization.

6809790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 6809790 is about 2609.5574337424. The cubic root of 6809790 is about 189.5445230166.

The spelling of 6809790 in words is "six million, eight hundred nine thousand, seven hundred ninety".