6855843960 has 192 divisors, whose sum is σ = 26153150400. Its totient is φ = 1524676608.

The previous prime is 6855843949. The next prime is 6855844001. The reversal of 6855843960 is 693485586.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6855843897 and 6855843906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56476 + ... + 130004.

It is an arithmetic number, because the mean of its divisors is an integer number (136214325).

Almost surely, 2^6855843960 is an apocalyptic number.

6855843960 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 6855843960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13076575200).

6855843960 is an abundant number, since it is smaller than the sum of its proper divisors (19297306440).

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

6855843960 is a wasteful number, since it uses less digits than its factorization.

6855843960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73590 (or 73583 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The square root of 6855843960 is about 82800.0239130400. The cubic root of 6855843960 is about 1899.7085388561.

The spelling of 6855843960 in words is "six billion, eight hundred fifty-five million, eight hundred forty-three thousand, nine hundred sixty".