605606661 has 12 divisors (see below), whose sum is σ = 954289440. Its totient is φ = 367034280.

The previous prime is 605606611. The next prime is 605606723. The reversal of 605606661 is 166606506.

It is not a de Polignac number, because 605606661 - 2¹⁴ = 605590277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605606611) 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 in 11 ways as a sum of consecutive naturals, for example, 3058521 + ... + 3058718.

It is an arithmetic number, because the mean of its divisors is an integer number (79524120).

Almost surely, 2^605606661 is an apocalyptic number.

It is an amenable number.

605606661 is a deficient number, since it is larger than the sum of its proper divisors (348682779).

605606661 is a wasteful number, since it uses less digits than its factorization.

605606661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117256 (or 6117253 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 605606661 is about 24609.0768010505. The cubic root of 605606661 is about 846.0516583985.

The spelling of 605606661 in words is "six hundred five million, six hundred six thousand, six hundred sixty-one".