6651765606 has 16 divisors (see below), whose sum is σ = 13308417648. Its totient is φ = 2216440800.

The previous prime is 6651765599. The next prime is 6651765607. The reversal of 6651765606 is 6065671566.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651765607) 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, 185785 + ... + 218676.

It is an arithmetic number, because the mean of its divisors is an integer number (831776103).

Almost surely, 2^6651765606 is an apocalyptic number.

6651765606 is an abundant number, since it is smaller than the sum of its proper divisors (6656652042).

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

6651765606 is a wasteful number, since it uses less digits than its factorization.

6651765606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407207.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The square root of 6651765606 is about 81558.3570579987. The cubic root of 6651765606 is about 1880.6687682214.

The spelling of 6651765606 in words is "six billion, six hundred fifty-one million, seven hundred sixty-five thousand, six hundred six".