6605440106 has 4 divisors (see below), whose sum is σ = 9908160162. Its totient is φ = 3302720052.

The previous prime is 6605440087. The next prime is 6605440109. The reversal of 6605440106 is 6010445066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4311892225 + 2293547881 = 65665^2 + 47891^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6605440109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1651360025 + ... + 1651360028.

Almost surely, 2^6605440106 is an apocalyptic number.

6605440106 is a deficient number, since it is larger than the sum of its proper divisors (3302720056).

6605440106 is a wasteful number, since it uses less digits than its factorization.

6605440106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302720055.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6605440106 is about 81273.8586877724. The cubic root of 6605440106 is about 1876.2926889920.

The spelling of 6605440106 in words is "six billion, six hundred five million, four hundred forty thousand, one hundred six".