606605661 has 12 divisors (see below), whose sum is σ = 879877440. Its totient is φ = 402710280.

The previous prime is 606605653. The next prime is 606605677. The reversal of 606605661 is 166506606.

It is not a de Polignac number, because 606605661 - 2³ = 606605653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (606605651) 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, 138855 + ... + 143156.

It is an arithmetic number, because the mean of its divisors is an integer number (73323120).

Almost surely, 2^606605661 is an apocalyptic number.

It is an amenable number.

606605661 is a deficient number, since it is larger than the sum of its proper divisors (273271779).

606605661 is a wasteful number, since it uses less digits than its factorization.

606605661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282256 (or 282253 counting only the distinct ones).

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

The square root of 606605661 is about 24629.3658261840. The cubic root of 606605661 is about 846.5166143621.

The spelling of 606605661 in words is "six hundred six million, six hundred five thousand, six hundred sixty-one".