6605861676 has 12 divisors (see below), whose sum is σ = 15413677272. Its totient is φ = 2201953888.

The previous prime is 6605861653. The next prime is 6605861687. The reversal of 6605861676 is 6761685066.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275244225 + ... + 275244248.

It is an arithmetic number, because the mean of its divisors is an integer number (1284473106).

Almost surely, 2^6605861676 is an apocalyptic number.

It is an amenable number.

6605861676 is an abundant number, since it is smaller than the sum of its proper divisors (8807815596).

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

6605861676 is a wasteful number, since it uses less digits than its factorization.

6605861676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550488480 (or 550488478 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 6605861676 is about 81276.4521617424. The cubic root of 6605861676 is about 1876.3326041665.

The spelling of 6605861676 in words is "six billion, six hundred five million, eight hundred sixty-one thousand, six hundred seventy-six".