200208661 has 2 divisors, whose sum is σ = 200208662. Its totient is φ = 200208660.

The previous prime is 200208623. The next prime is 200208689. The reversal of 200208661 is 166802002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190716100 + 9492561 = 13810^2 + 3081^2 .

It is a cyclic number.

It is not a de Polignac number, because 200208661 - 2¹¹ = 200206613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200208611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100104330 + 100104331.

It is an arithmetic number, because the mean of its divisors is an integer number (100104331).

Almost surely, 2^200208661 is an apocalyptic number.

It is an amenable number.

200208661 is a deficient number, since it is larger than the sum of its proper divisors (1).

200208661 is an equidigital number, since it uses as much as digits as its factorization.

200208661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 200208661 is about 14149.5109809491. The cubic root of 200208661 is about 585.0068531108.

The spelling of 200208661 in words is "two hundred million, two hundred eight thousand, six hundred sixty-one".