6209912808 has 288 divisors, whose sum is σ = 19518408000. Its totient is φ = 1767744000.

The previous prime is 6209912771. The next prime is 6209912833. The reversal of 6209912808 is 8082199026.

6209912808 is a `hidden beast` number, since 620 + 9 + 9 + 12 + 8 + 0 + 8 = 666.

It is a Cunningham number, because it is equal to 78803²-1.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 31205493 + ... + 31205691.

It is an arithmetic number, because the mean of its divisors is an integer number (67772250).

Almost surely, 2^6209912808 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 6209912808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9759204000).

6209912808 is an abundant number, since it is smaller than the sum of its proper divisors (13308495192).

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

6209912808 is a wasteful number, since it uses less digits than its factorization.

6209912808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 6209912808 is about 78802.9999936551. Note that the first 5 decimals coincide. The cubic root of 6209912808 is about 1838.0690999694.

The spelling of 6209912808 in words is "six billion, two hundred nine million, nine hundred twelve thousand, eight hundred eight".