6898391808 has 576 divisors, whose sum is σ = 24413405184. Its totient is φ = 1677312000.

The previous prime is 6898391779. The next prime is 6898391813. The reversal of 6898391808 is 8081938986.

It is a happy number.

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, 97160413 + ... + 97160483.

It is an arithmetic number, because the mean of its divisors is an integer number (42384384).

Almost surely, 2^6898391808 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 6898391808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12206702592).

6898391808 is an abundant number, since it is smaller than the sum of its proper divisors (17515013376).

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

6898391808 is a wasteful number, since it uses less digits than its factorization.

6898391808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 60.

The square root of 6898391808 is about 83056.5578867798. The cubic root of 6898391808 is about 1903.6303451101.

The spelling of 6898391808 in words is "six billion, eight hundred ninety-eight million, three hundred ninety-one thousand, eight hundred eight".