6885255720 has 256 divisors, whose sum is σ = 25022361600. Its totient is φ = 1480550400.

The previous prime is 6885255679. The next prime is 6885255757. The reversal of 6885255720 is 275525886.

It is a super-3 number, since 3×6885255720³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6885255720.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2408532 + ... + 2411388.

It is an arithmetic number, because the mean of its divisors is an integer number (97743600).

Almost surely, 2^6885255720 is an apocalyptic number.

6885255720 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 6885255720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12511180800).

6885255720 is an abundant number, since it is smaller than the sum of its proper divisors (18137105880).

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

6885255720 is a wasteful number, since it uses less digits than its factorization.

6885255720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 48.

The square root of 6885255720 is about 82977.4410306801. The cubic root of 6885255720 is about 1902.4212640299.

The spelling of 6885255720 in words is "six billion, eight hundred eighty-five million, two hundred fifty-five thousand, seven hundred twenty".