66130201 has 2 divisors, whose sum is σ = 66130202. Its totient is φ = 66130200.

The previous prime is 66130193. The next prime is 66130213. The reversal of 66130201 is 10203166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 7209225 = 7676^2 + 2685^2 .

It is a cyclic number.

It is not a de Polignac number, because 66130201 - 2³ = 66130193 is a prime.

It is not a weakly prime, because it can be changed into another prime (66130271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33065100 + 33065101.

It is an arithmetic number, because the mean of its divisors is an integer number (33065101).

Almost surely, 2^66130201 is an apocalyptic number.

It is an amenable number.

66130201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66130201 is an equidigital number, since it uses as much as digits as its factorization.

66130201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 66130201 is about 8132.0477740850. The cubic root of 66130201 is about 404.3895716930.

Adding to 66130201 its reverse (10203166), we get a palindrome (76333367).

The spelling of 66130201 in words is "sixty-six million, one hundred thirty thousand, two hundred one".