6532647666 has 16 divisors (see below), whose sum is σ = 13081065600. Its totient is φ = 2174920848.

The previous prime is 6532647661. The next prime is 6532647679. The reversal of 6532647666 is 6667462356.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6532647661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651706 + ... + 661653.

It is an arithmetic number, because the mean of its divisors is an integer number (817566600).

Almost surely, 2^6532647666 is an apocalyptic number.

6532647666 is an abundant number, since it is smaller than the sum of its proper divisors (6548417934).

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

6532647666 is a wasteful number, since it uses less digits than its factorization.

6532647666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314193.

The product of its digits is 6531840, while the sum is 51.

The square root of 6532647666 is about 80824.7961086200. The cubic root of 6532647666 is about 1869.3749200985.

The spelling of 6532647666 in words is "six billion, five hundred thirty-two million, six hundred forty-seven thousand, six hundred sixty-six".