667130213 has 2 divisors, whose sum is σ = 667130214. Its totient is φ = 667130212.

The previous prime is 667130197. The next prime is 667130227. The reversal of 667130213 is 312031766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479522404 + 187607809 = 21898^2 + 13697^2 .

It is a cyclic number.

It is not a de Polignac number, because 667130213 - 2⁴ = 667130197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667130293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333565106 + 333565107.

It is an arithmetic number, because the mean of its divisors is an integer number (333565107).

Almost surely, 2^667130213 is an apocalyptic number.

It is an amenable number.

667130213 is a deficient number, since it is larger than the sum of its proper divisors (1).

667130213 is an equidigital number, since it uses as much as digits as its factorization.

667130213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 667130213 is about 25828.8639510142. The cubic root of 667130213 is about 873.7828903374.

Adding to 667130213 its reverse (312031766), we get a palindrome (979161979).

The spelling of 667130213 in words is "six hundred sixty-seven million, one hundred thirty thousand, two hundred thirteen".