66318359 has 2 divisors, whose sum is σ = 66318360. Its totient is φ = 66318358.

The previous prime is 66318337. The next prime is 66318391. The reversal of 66318359 is 95381366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66318359 - 2⁸ = 66318103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62318359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33159179 + 33159180.

It is an arithmetic number, because the mean of its divisors is an integer number (33159180).

Almost surely, 2^66318359 is an apocalyptic number.

66318359 is a deficient number, since it is larger than the sum of its proper divisors (1).

66318359 is an equidigital number, since it uses as much as digits as its factorization.

66318359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 66318359 is about 8143.6084753627. The cubic root of 66318359 is about 404.7727404578.

The spelling of 66318359 in words is "sixty-six million, three hundred eighteen thousand, three hundred fifty-nine".