200661173 has 2 divisors, whose sum is σ = 200661174. Its totient is φ = 200661172.

The previous prime is 200661161. The next prime is 200661191. The reversal of 200661173 is 371166002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199854769 + 806404 = 14137^2 + 898^2 .

It is a cyclic number.

It is not a de Polignac number, because 200661173 - 2⁴ = 200661157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200661103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100330586 + 100330587.

It is an arithmetic number, because the mean of its divisors is an integer number (100330587).

Almost surely, 2^200661173 is an apocalyptic number.

It is an amenable number.

200661173 is a deficient number, since it is larger than the sum of its proper divisors (1).

200661173 is an equidigital number, since it uses as much as digits as its factorization.

200661173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 200661173 is about 14165.4923317194. The cubic root of 200661173 is about 585.4472660075.

The spelling of 200661173 in words is "two hundred million, six hundred sixty-one thousand, one hundred seventy-three".