200606661 has 6 divisors (see below), whose sum is σ = 289765190. Its totient is φ = 133737768.

The previous prime is 200606657. The next prime is 200606677. The reversal of 200606661 is 166606002.

It can be written as a sum of positive squares in only one way, i.e., 193349025 + 7257636 = 13905^2 + 2694^2 .

It is not a de Polignac number, because 200606661 - 2² = 200606657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200606261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11144806 + ... + 11144823.

Almost surely, 2^200606661 is an apocalyptic number.

It is an amenable number.

200606661 is a deficient number, since it is larger than the sum of its proper divisors (89158529).

200606661 is a wasteful number, since it uses less digits than its factorization.

200606661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22289635 (or 22289632 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 200606661 is about 14163.5680885856. The cubic root of 200606661 is about 585.3942466295.

The spelling of 200606661 in words is "two hundred million, six hundred six thousand, six hundred sixty-one".