6868620 has 72 divisors (see below), whose sum is σ = 22735440. Its totient is φ = 1664640.

The previous prime is 6868613. The next prime is 6868649. The reversal of 6868620 is 268686.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246 + ... + 3714.

It is an arithmetic number, because the mean of its divisors is an integer number (315770).

Almost surely, 2^6868620 is an apocalyptic number.

6868620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6868620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11367720).

6868620 is an abundant number, since it is smaller than the sum of its proper divisors (15866820).

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

6868620 is a wasteful number, since it uses less digits than its factorization.

6868620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 6868620 is about 2620.8052197750. The cubic root of 6868620 is about 190.0887858359.

The spelling of 6868620 in words is "six million, eight hundred sixty-eight thousand, six hundred twenty".