6847134840 has 384 divisors, whose sum is σ = 27977564160. Its totient is φ = 1413614592.

The previous prime is 6847134839. The next prime is 6847134851. The reversal of 6847134840 is 484317486.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1537497 + ... + 1541943.

It is an arithmetic number, because the mean of its divisors is an integer number (72858240).

Almost surely, 2^6847134840 is an apocalyptic number.

6847134840 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 6847134840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13988782080).

6847134840 is an abundant number, since it is smaller than the sum of its proper divisors (21130429320).

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

6847134840 is a wasteful number, since it uses less digits than its factorization.

6847134840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531 (or 4524 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 6847134840 is about 82747.4159113141. The cubic root of 6847134840 is about 1898.9037850138.

The spelling of 6847134840 in words is "six billion, eight hundred forty-seven million, one hundred thirty-four thousand, eight hundred forty".