6660735984 has 120 divisors (see below), whose sum is σ = 21326888960. Its totient is φ = 1901003904.

The previous prime is 6660735971. The next prime is 6660736001. The reversal of 6660735984 is 4895370666.

It is a self number, because there is not a number n which added to its sum of digits gives 6660735984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1092657 + ... + 1098735.

Almost surely, 2^6660735984 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 6660735984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10663444480).

6660735984 is an abundant number, since it is smaller than the sum of its proper divisors (14666152976).

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

6660735984 is a wasteful number, since it uses less digits than its factorization.

6660735984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7187 (or 7178 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The square root of 6660735984 is about 81613.3321461635. The cubic root of 6660735984 is about 1881.5137935784.

The spelling of 6660735984 in words is "six billion, six hundred sixty million, seven hundred thirty-five thousand, nine hundred eighty-four".