660046213 has 2 divisors, whose sum is σ = 660046214. Its totient is φ = 660046212.

The previous prime is 660046207. The next prime is 660046319. The reversal of 660046213 is 312640066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 626150529 + 33895684 = 25023^2 + 5822^2 .

It is a cyclic number.

It is not a de Polignac number, because 660046213 - 2⁵ = 660046181 is a prime.

It is a super-2 number, since 2×660046213² = 871322006591282738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660076213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330023106 + 330023107.

It is an arithmetic number, because the mean of its divisors is an integer number (330023107).

Almost surely, 2^660046213 is an apocalyptic number.

It is an amenable number.

660046213 is a deficient number, since it is larger than the sum of its proper divisors (1).

660046213 is an equidigital number, since it uses as much as digits as its factorization.

660046213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 660046213 is about 25691.3645608792. The cubic root of 660046213 is about 870.6790897308.

Adding to 660046213 its reverse (312640066), we get a palindrome (972686279).

The spelling of 660046213 in words is "six hundred sixty million, forty-six thousand, two hundred thirteen".