66242359 has 2 divisors, whose sum is σ = 66242360. Its totient is φ = 66242358.

The previous prime is 66242357. The next prime is 66242389. The reversal of 66242359 is 95324266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66242359 - 2¹ = 66242357 is a prime.

Together with 66242357, it forms a pair of twin primes.

It is equal to p_3909673 and since 66242359 and 3909673 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66242357) 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, 33121179 + 33121180.

It is an arithmetic number, because the mean of its divisors is an integer number (33121180).

Almost surely, 2^66242359 is an apocalyptic number.

66242359 is a deficient number, since it is larger than the sum of its proper divisors (1).

66242359 is an equidigital number, since it uses as much as digits as its factorization.

66242359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 66242359 is about 8138.9409016161. The cubic root of 66242359 is about 404.6180598763.

The spelling of 66242359 in words is "sixty-six million, two hundred forty-two thousand, three hundred fifty-nine".