5660209 has 2 divisors, whose sum is σ = 5660210. Its totient is φ = 5660208.

The previous prime is 5660203. The next prime is 5660243. The reversal of 5660209 is 9020665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5130225 + 529984 = 2265^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 5660209 - 2⁵ = 5660177 is a prime.

It is not a weakly prime, because it can be changed into another prime (5660203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830104 + 2830105.

It is an arithmetic number, because the mean of its divisors is an integer number (2830105).

Almost surely, 2^5660209 is an apocalyptic number.

It is an amenable number.

5660209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5660209 is an equidigital number, since it uses as much as digits as its factorization.

5660209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 5660209 is about 2379.1193748948. The cubic root of 5660209 is about 178.2149593407.

The spelling of 5660209 in words is "five million, six hundred sixty thousand, two hundred nine".