6809660 has 48 divisors (see below), whose sum is σ = 16807392. Its totient is φ = 2284800.

The previous prime is 6809653. The next prime is 6809669. The reversal of 6809660 is 669086.

6809660 = T₅₉ + T₆₀ + ... + T₃₄₄.

It is a self number, because there is not a number n which added to its sum of digits gives 6809660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1670 + ... + 4050.

It is an arithmetic number, because the mean of its divisors is an integer number (350154).

Almost surely, 2^6809660 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 6809660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8403696).

6809660 is an abundant number, since it is smaller than the sum of its proper divisors (9997732).

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

6809660 is a wasteful number, since it uses less digits than its factorization.

6809660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414 (or 2412 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 6809660 is about 2609.5325251853. The cubic root of 6809660 is about 189.5433168637.

The spelling of 6809660 in words is "six million, eight hundred nine thousand, six hundred sixty".