6879220 has 24 divisors (see below), whose sum is σ = 15296904. Its totient is φ = 2589696.

The previous prime is 6879193. The next prime is 6879227. The reversal of 6879220 is 229786.

It can be written as a sum of positive squares in 4 ways, for example, as 1468944 + 5410276 = 1212^2 + 2326^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6879227) 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, 9777 + ... + 10456.

It is an arithmetic number, because the mean of its divisors is an integer number (637371).

Almost surely, 2^6879220 is an apocalyptic number.

It is an amenable number.

6879220 is an abundant number, since it is smaller than the sum of its proper divisors (8417684).

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

6879220 is a wasteful number, since it uses less digits than its factorization.

6879220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20259 (or 20257 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 6879220 is about 2622.8267194003. The cubic root of 6879220 is about 190.1865204366.

The spelling of 6879220 in words is "six million, eight hundred seventy-nine thousand, two hundred twenty".