605946665 has 4 divisors (see below), whose sum is σ = 727136004. Its totient is φ = 484757328.

The previous prime is 605946659. The next prime is 605946703. The reversal of 605946665 is 566649506.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86471401 + 519475264 = 9299^2 + 22792^2 .

It is a cyclic number.

It is not a de Polignac number, because 605946665 - 2²⁶ = 538837801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 60594662 + ... + 60594671.

It is an arithmetic number, because the mean of its divisors is an integer number (181784001).

Almost surely, 2^605946665 is an apocalyptic number.

It is an amenable number.

605946665 is a deficient number, since it is larger than the sum of its proper divisors (121189339).

605946665 is a wasteful number, since it uses less digits than its factorization.

605946665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121189338.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The square root of 605946665 is about 24615.9839332089. The cubic root of 605946665 is about 846.2099608907.

The spelling of 605946665 in words is "six hundred five million, nine hundred forty-six thousand, six hundred sixty-five".