6660575680 has 252 divisors, whose sum is σ = 18114584040. Its totient is φ = 2330803200.

The previous prime is 6660575651. The next prime is 6660575689. The reversal of 6660575680 is 865750666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660575689) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 37209831 + ... + 37210009.

It is an arithmetic number, because the mean of its divisors is an integer number (71883270).

Almost surely, 2^6660575680 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 6660575680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9057292020).

6660575680 is an abundant number, since it is smaller than the sum of its proper divisors (11454008360).

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

6660575680 is a wasteful number, since it uses less digits than its factorization.

6660575680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The square root of 6660575680 is about 81612.3500458111. The cubic root of 6660575680 is about 1881.4986993202.

The spelling of 6660575680 in words is "six billion, six hundred sixty million, five hundred seventy-five thousand, six hundred eighty".