6845878620 has 432 divisors, whose sum is σ = 25592898240. Its totient is φ = 1504935936.

The previous prime is 6845878603. The next prime is 6845878651. The reversal of 6845878620 is 268785486.

6845878620 is a `hidden beast` number, since 6 + 8 + 4 + 5 + 8 + 7 + 8 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 26637532 + ... + 26637788.

It is an arithmetic number, because the mean of its divisors is an integer number (59242820).

Almost surely, 2^6845878620 is an apocalyptic number.

6845878620 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 6845878620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12796449120).

6845878620 is an abundant number, since it is smaller than the sum of its proper divisors (18747019620).

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

6845878620 is a wasteful number, since it uses less digits than its factorization.

6845878620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The square root of 6845878620 is about 82739.8248729111. The cubic root of 6845878620 is about 1898.7876494882.

The spelling of 6845878620 in words is "six billion, eight hundred forty-five million, eight hundred seventy-eight thousand, six hundred twenty".