6566610672 has 120 divisors (see below), whose sum is σ = 20482684560. Its totient is φ = 1951672320.

The previous prime is 6566610671. The next prime is 6566610749. The reversal of 6566610672 is 2760166656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566610671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24079 + ... + 117102.

It is an arithmetic number, because the mean of its divisors is an integer number (170689038).

Almost surely, 2^6566610672 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 6566610672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10241342280).

6566610672 is an abundant number, since it is smaller than the sum of its proper divisors (13916073888).

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

6566610672 is a wasteful number, since it uses less digits than its factorization.

6566610672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141231 (or 141222 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 6566610672 is about 81034.6263766299. The cubic root of 6566610672 is about 1872.6089269333.

The spelling of 6566610672 in words is "six billion, five hundred sixty-six million, six hundred ten thousand, six hundred seventy-two".