6399886080 has 576 divisors, whose sum is σ = 24606489600. Its totient is φ = 1416167424.

The previous prime is 6399886067. The next prime is 6399886093. The reversal of 6399886080 is 806889936.

It is an interprime number because it is at equal distance from previous prime (6399886067) and next prime (6399886093).

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6399886080.

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, 56636104 + ... + 56636216.

It is an arithmetic number, because the mean of its divisors is an integer number (42719600).

Almost surely, 2^6399886080 is an apocalyptic number.

6399886080 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 6399886080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12303244800).

6399886080 is an abundant number, since it is smaller than the sum of its proper divisors (18206603520).

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

6399886080 is a wasteful number, since it uses less digits than its factorization.

6399886080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 57.

The square root of 6399886080 is about 79999.2879968316. The cubic root of 6399886080 is about 1856.6245173423.

The spelling of 6399886080 in words is "six billion, three hundred ninety-nine million, eight hundred eighty-six thousand, eighty".