6646324608 has 384 divisors, whose sum is σ = 24624138240. Its totient is φ = 1669939200.

The previous prime is 6646324591. The next prime is 6646324613. The reversal of 6646324608 is 8064236466.

6646324608 is a `hidden beast` number, since 6 + 6 + 4 + 6 + 32 + 4 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2748616 + ... + 2751032.

It is an arithmetic number, because the mean of its divisors is an integer number (64125360).

Almost surely, 2^6646324608 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 6646324608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12312069120).

6646324608 is an abundant number, since it is smaller than the sum of its proper divisors (17977813632).

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

6646324608 is a wasteful number, since it uses less digits than its factorization.

6646324608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486 (or 2471 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The square root of 6646324608 is about 81524.9937626493. The cubic root of 6646324608 is about 1880.1558464436.

The spelling of 6646324608 in words is "six billion, six hundred forty-six million, three hundred twenty-four thousand, six hundred eight".