6650660500 has 96 divisors (see below), whose sum is σ = 15903433728. Its totient is φ = 2409584000.

The previous prime is 6650660477. The next prime is 6650660521. The reversal of 6650660500 is 50660566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1609437 + ... + 1613563.

It is an arithmetic number, because the mean of its divisors is an integer number (165660768).

Almost surely, 2^6650660500 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 6650660500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7951716864).

6650660500 is an abundant number, since it is smaller than the sum of its proper divisors (9252773228).

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

6650660500 is a wasteful number, since it uses less digits than its factorization.

6650660500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450 (or 4438 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 6650660500 is about 81551.5818362832. The cubic root of 6650660500 is about 1880.5646127450.

The spelling of 6650660500 in words is "six billion, six hundred fifty million, six hundred sixty thousand, five hundred".