605609999 has 2 divisors, whose sum is σ = 605610000. Its totient is φ = 605609998.

The previous prime is 605609957. The next prime is 605610001. The reversal of 605609999 is 999906506.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 605609999 - 2²⁸ = 337174543 is a prime.

Together with 605610001, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 605609999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605609299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302804999 + 302805000.

It is an arithmetic number, because the mean of its divisors is an integer number (302805000).

Almost surely, 2^605609999 is an apocalyptic number.

605609999 is a deficient number, since it is larger than the sum of its proper divisors (1).

605609999 is an equidigital number, since it uses as much as digits as its factorization.

605609999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1180980, while the sum is 53.

The square root of 605609999 is about 24609.1446214613. The cubic root of 605609999 is about 846.0532128261.

The spelling of 605609999 in words is "six hundred five million, six hundred nine thousand, nine hundred ninety-nine".