5660606209 has 4 divisors (see below), whose sum is σ = 5813595604. Its totient is φ = 5507616816.

The previous prime is 5660606177. The next prime is 5660606219. The reversal of 5660606209 is 9026060665.

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 4672132609 + 988473600 = 68353^2 + 31440^2 .

It is a cyclic number.

It is not a de Polignac number, because 5660606209 - 2⁵ = 5660606177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5660606219) by changing a digit.

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, 76494642 + ... + 76494715.

It is an arithmetic number, because the mean of its divisors is an integer number (1453398901).

Almost surely, 2^5660606209 is an apocalyptic number.

It is an amenable number.

5660606209 is a deficient number, since it is larger than the sum of its proper divisors (152989395).

5660606209 is a wasteful number, since it uses less digits than its factorization.

5660606209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152989394.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 5660606209 is about 75237.0002658267. Note that the first 3 decimals coincide. The cubic root of 5660606209 is about 1782.1912802835.

Subtracting from 5660606209 its sum of digits (40), we obtain a square (5660606169 = 75237²).

The spelling of 5660606209 in words is "five billion, six hundred sixty million, six hundred six thousand, two hundred nine".