666201203 has 2 divisors, whose sum is σ = 666201204. Its totient is φ = 666201202.

The previous prime is 666201181. The next prime is 666201227. The reversal of 666201203 is 302102666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 666201203 - 2¹⁰ = 666200179 is a prime.

It is a super-3 number, since 3×666201203³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (666201293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333100601 + 333100602.

It is an arithmetic number, because the mean of its divisors is an integer number (333100602).

Almost surely, 2^666201203 is an apocalyptic number.

666201203 is a deficient number, since it is larger than the sum of its proper divisors (1).

666201203 is an equidigital number, since it uses as much as digits as its factorization.

666201203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 666201203 is about 25810.8737356952. The cubic root of 666201203 is about 873.3771074181.

Adding to 666201203 its reverse (302102666), we get a palindrome (968303869).

The spelling of 666201203 in words is "six hundred sixty-six million, two hundred one thousand, two hundred three".