200563661 has 2 divisors, whose sum is σ = 200563662. Its totient is φ = 200563660.

The previous prime is 200563621. The next prime is 200563667. The reversal of 200563661 is 166365002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187854436 + 12709225 = 13706^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 200563661 - 2²² = 196369357 is a prime.

It is a super-2 number, since 2×200563661² = 80451564227445842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200563667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100281830 + 100281831.

It is an arithmetic number, because the mean of its divisors is an integer number (100281831).

Almost surely, 2^200563661 is an apocalyptic number.

It is an amenable number.

200563661 is a deficient number, since it is larger than the sum of its proper divisors (1).

200563661 is an equidigital number, since it uses as much as digits as its factorization.

200563661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 200563661 is about 14162.0500281562. The cubic root of 200563661 is about 585.3524172585.

The spelling of 200563661 in words is "two hundred million, five hundred sixty-three thousand, six hundred sixty-one".