66336313 has 2 divisors, whose sum is σ = 66336314. Its totient is φ = 66336312.

The previous prime is 66336307. The next prime is 66336323. The reversal of 66336313 is 31363366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46949904 + 19386409 = 6852^2 + 4403^2 .

It is a cyclic number.

It is not a de Polignac number, because 66336313 - 2¹³ = 66328121 is a prime.

It is not a weakly prime, because it can be changed into another prime (66336323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33168156 + 33168157.

It is an arithmetic number, because the mean of its divisors is an integer number (33168157).

Almost surely, 2^66336313 is an apocalyptic number.

It is an amenable number.

66336313 is a deficient number, since it is larger than the sum of its proper divisors (1).

66336313 is an equidigital number, since it uses as much as digits as its factorization.

66336313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 31.

The square root of 66336313 is about 8144.7107376505. The cubic root of 66336313 is about 404.8092644519.

Adding to 66336313 its reverse (31363366), we get a palindrome (97699679).

The spelling of 66336313 in words is "sixty-six million, three hundred thirty-six thousand, three hundred thirteen".