201066563 has 4 divisors (see below), whose sum is σ = 201127008. Its totient is φ = 201006120.

The previous prime is 201066559. The next prime is 201066571. The reversal of 201066563 is 365660102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201066563 - 2² = 201066559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201066863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24923 + ... + 31988.

It is an arithmetic number, because the mean of its divisors is an integer number (50281752).

Almost surely, 2^201066563 is an apocalyptic number.

201066563 is a deficient number, since it is larger than the sum of its proper divisors (60445).

201066563 is an equidigital number, since it uses as much as digits as its factorization.

201066563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60444.

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

The square root of 201066563 is about 14179.7941804527. The cubic root of 201066563 is about 585.8412548995.

The spelling of 201066563 in words is "two hundred one million, sixty-six thousand, five hundred sixty-three".