6868820 has 72 divisors (see below), whose sum is σ = 17275104. Its totient is φ = 2286144.

The previous prime is 6868819. The next prime is 6868837. The reversal of 6868820 is 288686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42059 + ... + 42221.

It is an arithmetic number, because the mean of its divisors is an integer number (239932).

Almost surely, 2^6868820 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 6868820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8637552).

6868820 is an abundant number, since it is smaller than the sum of its proper divisors (10406284).

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

6868820 is a wasteful number, since it uses less digits than its factorization.

6868820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 6868820 is about 2620.8433757094. The cubic root of 6868820 is about 190.0906308154.

The spelling of 6868820 in words is "six million, eight hundred sixty-eight thousand, eight hundred twenty".