6612645888 has 288 divisors, whose sum is σ = 20122830000. Its totient is φ = 2089156608.

The previous prime is 6612645863. The next prime is 6612645901. The reversal of 6612645888 is 8885462166.

6612645888 is a `hidden beast` number, since 66 + 126 + 458 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 47572923 + ... + 47573061.

Almost surely, 2^6612645888 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 6612645888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10061415000).

6612645888 is an abundant number, since it is smaller than the sum of its proper divisors (13510184112).

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

6612645888 is a wasteful number, since it uses less digits than its factorization.

6612645888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 262 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 6612645888 is about 81318.1768610192. The cubic root of 6612645888 is about 1876.9747148439.

The spelling of 6612645888 in words is "six billion, six hundred twelve million, six hundred forty-five thousand, eight hundred eighty-eight".