6548604666 has 32 divisors (see below), whose sum is σ = 14137925760. Its totient is φ = 2015961024.

The previous prime is 6548604659. The next prime is 6548604679. The reversal of 6548604666 is 6664068456.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814165 + ... + 822168.

It is an arithmetic number, because the mean of its divisors is an integer number (441810180).

Almost surely, 2^6548604666 is an apocalyptic number.

6548604666 is an abundant number, since it is smaller than the sum of its proper divisors (7589321094).

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

6548604666 is a wasteful number, since it uses less digits than its factorization.

6548604666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636390.

The product of its (nonzero) digits is 4976640, while the sum is 51.

The square root of 6548604666 is about 80923.4494198066. The cubic root of 6548604666 is about 1870.8957613774.

It can be divided in two parts, 654860 and 4666, that added together give a triangular number (659526 = T₁₁₄₈).

The spelling of 6548604666 in words is "six billion, five hundred forty-eight million, six hundred four thousand, six hundred sixty-six".