66302413 has 2 divisors, whose sum is σ = 66302414. Its totient is φ = 66302412.

The previous prime is 66302407. The next prime is 66302429. The reversal of 66302413 is 31420366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40220964 + 26081449 = 6342^2 + 5107^2 .

It is a cyclic number.

It is not a de Polignac number, because 66302413 - 2¹⁷ = 66171341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66305413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33151206 + 33151207.

It is an arithmetic number, because the mean of its divisors is an integer number (33151207).

Almost surely, 2^66302413 is an apocalyptic number.

It is an amenable number.

66302413 is a deficient number, since it is larger than the sum of its proper divisors (1).

66302413 is an equidigital number, since it uses as much as digits as its factorization.

66302413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 66302413 is about 8142.6293664884. The cubic root of 66302413 is about 404.7402958295.

Adding to 66302413 its reverse (31420366), we get a palindrome (97722779).

The spelling of 66302413 in words is "sixty-six million, three hundred two thousand, four hundred thirteen".