6660056872 has 24 divisors (see below), whose sum is σ = 14526400410. Its totient is φ = 2854309920.

The previous prime is 6660056803. The next prime is 6660056873. The reversal of 6660056872 is 2786500666.

It can be written as a sum of positive squares in only one way, i.e., 4513958596 + 2146098276 = 67186^2 + 46326^2 .

It is not an unprimeable number, because it can be changed into a prime (6660056873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8494579 + ... + 8495362.

Almost surely, 2^6660056872 is an apocalyptic number.

It is an amenable number.

6660056872 is an abundant number, since it is smaller than the sum of its proper divisors (7866343538).

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

6660056872 is a wasteful number, since it uses less digits than its factorization.

6660056872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16989961 (or 16989950 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 6660056872 is about 81609.1714943854. The cubic root of 6660056872 is about 1881.4498465898.

The spelling of 6660056872 in words is "six billion, six hundred sixty million, fifty-six thousand, eight hundred seventy-two".