6646852080 has 240 divisors, whose sum is σ = 25633895040. Its totient is φ = 1526515200.

The previous prime is 6646852057. The next prime is 6646852081. The reversal of 6646852080 is 802586466.

6646852080 is a `hidden beast` number, since 6 + 6 + 46 + 8 + 520 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646852081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128395 + ... + 172565.

It is an arithmetic number, because the mean of its divisors is an integer number (106807896).

Almost surely, 2^6646852080 is an apocalyptic number.

6646852080 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 6646852080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12816947520).

6646852080 is an abundant number, since it is smaller than the sum of its proper divisors (18987042960).

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

6646852080 is a wasteful number, since it uses less digits than its factorization.

6646852080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44220 (or 44211 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 6646852080 is about 81528.2287309126. The cubic root of 6646852080 is about 1880.2055833729.

The spelling of 6646852080 in words is "six billion, six hundred forty-six million, eight hundred fifty-two thousand, eighty".