6685797888 has 480 divisors, whose sum is σ = 24904239360. Its totient is φ = 1733529600.

The previous prime is 6685797883. The next prime is 6685797913. The reversal of 6685797888 is 8887975866.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685797883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11708643 + ... + 11709213.

It is an arithmetic number, because the mean of its divisors is an integer number (51883832).

Almost surely, 2^6685797888 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 6685797888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12452119680).

6685797888 is an abundant number, since it is smaller than the sum of its proper divisors (18218441472).

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

6685797888 is a wasteful number, since it uses less digits than its factorization.

6685797888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 594 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 72.

The square root of 6685797888 is about 81766.7284902606. The cubic root of 6685797888 is about 1883.8706552444.

The spelling of 6685797888 in words is "six billion, six hundred eighty-five million, seven hundred ninety-seven thousand, eight hundred eighty-eight".