605967409 has 2 divisors, whose sum is σ = 605967410. Its totient is φ = 605967408.

The previous prime is 605967403. The next prime is 605967421. The reversal of 605967409 is 904769506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380367009 + 225600400 = 19503^2 + 15020^2 .

It is a cyclic number.

It is not a de Polignac number, because 605967409 - 2⁷ = 605967281 is a prime.

It is not a weakly prime, because it can be changed into another prime (605967403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302983704 + 302983705.

It is an arithmetic number, because the mean of its divisors is an integer number (302983705).

Almost surely, 2^605967409 is an apocalyptic number.

It is an amenable number.

605967409 is a deficient number, since it is larger than the sum of its proper divisors (1).

605967409 is an equidigital number, since it uses as much as digits as its factorization.

605967409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 605967409 is about 24616.4052818441. The cubic root of 605967409 is about 846.2196171747.

The spelling of 605967409 in words is "six hundred five million, nine hundred sixty-seven thousand, four hundred nine".