6609623328 has 864 divisors, whose sum is σ = 26351619840. Its totient is φ = 1606832640.

The previous prime is 6609623311. The next prime is 6609623351. The reversal of 6609623328 is 8233269066.

6609623328 is a `hidden beast` number, since 6 + 609 + 6 + 2 + 3 + 32 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 79633975 + ... + 79634057.

It is an arithmetic number, because the mean of its divisors is an integer number (30499560).

Almost surely, 2^6609623328 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 6609623328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13175809920).

6609623328 is an abundant number, since it is smaller than the sum of its proper divisors (19741996512).

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

6609623328 is a wasteful number, since it uses less digits than its factorization.

6609623328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 6609623328 is about 81299.5899620656. The cubic root of 6609623328 is about 1876.6886904898.

The spelling of 6609623328 in words is "six billion, six hundred nine million, six hundred twenty-three thousand, three hundred twenty-eight".