20060609 has 2 divisors, whose sum is σ = 20060610. Its totient is φ = 20060608.

The previous prime is 20060591. The next prime is 20060611. The reversal of 20060609 is 90606002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13300609 + 6760000 = 3647^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 20060609 - 2²⁰ = 19012033 is a prime.

It is a super-3 number, since 3×20060609³ (a number of 23 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 20060611, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20060009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030304 + 10030305.

It is an arithmetic number, because the mean of its divisors is an integer number (10030305).

Almost surely, 2^20060609 is an apocalyptic number.

It is an amenable number.

20060609 is a deficient number, since it is larger than the sum of its proper divisors (1).

20060609 is an equidigital number, since it uses as much as digits as its factorization.

20060609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 20060609 is about 4478.9071211625. The cubic root of 20060609 is about 271.7156820404.

The spelling of 20060609 in words is "twenty million, sixty thousand, six hundred nine".