6908813784 has 128 divisors (see below), whose sum is σ = 20491891200. Its totient is φ = 2151515520.

The previous prime is 6908813783. The next prime is 6908813809. The reversal of 6908813784 is 4873188096.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6908813784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6908813783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197454 + ... + 229794.

It is an arithmetic number, because the mean of its divisors is an integer number (160092900).

Almost surely, 2^6908813784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6908813784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10245945600).

6908813784 is an abundant number, since it is smaller than the sum of its proper divisors (13583077416).

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

6908813784 is a wasteful number, since it uses less digits than its factorization.

6908813784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32422 (or 32412 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 6908813784 is about 83119.2744434166. The cubic root of 6908813784 is about 1904.5885204641.

The spelling of 6908813784 in words is "six billion, nine hundred eight million, eight hundred thirteen thousand, seven hundred eighty-four".