660650201 has 2 divisors, whose sum is σ = 660650202. Its totient is φ = 660650200.

The previous prime is 660650173. The next prime is 660650231. The reversal of 660650201 is 102056066.

660650201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660438601 + 211600 = 25699^2 + 460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660650201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (660650231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330325100 + 330325101.

It is an arithmetic number, because the mean of its divisors is an integer number (330325101).

Almost surely, 2^660650201 is an apocalyptic number.

It is an amenable number.

660650201 is a deficient number, since it is larger than the sum of its proper divisors (1).

660650201 is an equidigital number, since it uses as much as digits as its factorization.

660650201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 660650201 is about 25703.1165620047. The cubic root of 660650201 is about 870.9445859884.

The spelling of 660650201 in words is "six hundred sixty million, six hundred fifty thousand, two hundred one".