6609646105 has 4 divisors (see below), whose sum is σ = 7931575332. Its totient is φ = 5287716880.

The previous prime is 6609646093. The next prime is 6609646111. The reversal of 6609646105 is 5016469066.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2272238224 + 4337407881 = 47668^2 + 65859^2 .

It is not a de Polignac number, because 6609646105 - 2¹⁹ = 6609121817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660964606 + ... + 660964615.

It is an arithmetic number, because the mean of its divisors is an integer number (1982893833).

Almost surely, 2^6609646105 is an apocalyptic number.

It is an amenable number.

6609646105 is a deficient number, since it is larger than the sum of its proper divisors (1321929227).

6609646105 is a wasteful number, since it uses less digits than its factorization.

6609646105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321929226.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 6609646105 is about 81299.7300426022. The cubic root of 6609646105 is about 1876.6908461996.

The spelling of 6609646105 in words is "six billion, six hundred nine million, six hundred forty-six thousand, one hundred five".