5608635209 has 2 divisors, whose sum is σ = 5608635210. Its totient is φ = 5608635208.

The previous prime is 5608635181. The next prime is 5608635233. The reversal of 5608635209 is 9025368065.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4215255625 + 1393379584 = 64925^2 + 37328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5608635209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5608635209.

It is not a weakly prime, because it can be changed into another prime (5608635239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2804317604 + 2804317605.

It is an arithmetic number, because the mean of its divisors is an integer number (2804317605).

Almost surely, 2^5608635209 is an apocalyptic number.

It is an amenable number.

5608635209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5608635209 is an equidigital number, since it uses as much as digits as its factorization.

5608635209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 5608635209 is about 74890.8219276568. The cubic root of 5608635209 is about 1776.7203009895.

The spelling of 5608635209 in words is "five billion, six hundred eight million, six hundred thirty-five thousand, two hundred nine".