6809980 has 24 divisors (see below), whose sum is σ = 15054480. Its totient is φ = 2580480.

The previous prime is 6809927. The next prime is 6809981. The reversal of 6809980 is 899086.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8581 + ... + 9340.

It is an arithmetic number, because the mean of its divisors is an integer number (627270).

Almost surely, 2^6809980 is an apocalyptic number.

It is an amenable number.

6809980 is an abundant number, since it is smaller than the sum of its proper divisors (8244500).

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

6809980 is a wasteful number, since it uses less digits than its factorization.

6809980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17949 (or 17947 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 6809980 is about 2609.5938381288. The cubic root of 6809980 is about 189.5462858279.

The spelling of 6809980 in words is "six million, eight hundred nine thousand, nine hundred eighty".