609705617 has 2 divisors, whose sum is σ = 609705618. Its totient is φ = 609705616.

The previous prime is 609705601. The next prime is 609705619. The reversal of 609705617 is 716507906.

609705617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389509696 + 220195921 = 19736^2 + 14839^2 .

It is a cyclic number.

It is not a de Polignac number, because 609705617 - 2⁴ = 609705601 is a prime.

Together with 609705619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (609705619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304852808 + 304852809.

It is an arithmetic number, because the mean of its divisors is an integer number (304852809).

Almost surely, 2^609705617 is an apocalyptic number.

It is an amenable number.

609705617 is a deficient number, since it is larger than the sum of its proper divisors (1).

609705617 is an equidigital number, since it uses as much as digits as its factorization.

609705617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 609705617 is about 24692.2177416286. The cubic root of 609705617 is about 847.9561584557.

The spelling of 609705617 in words is "six hundred nine million, seven hundred five thousand, six hundred seventeen".