66241339 has 2 divisors, whose sum is σ = 66241340. Its totient is φ = 66241338.

The previous prime is 66241321. The next prime is 66241369. The reversal of 66241339 is 93314266.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66241339 - 2⁹ = 66240827 is a prime.

It is not a weakly prime, because it can be changed into another prime (66241309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33120669 + 33120670.

It is an arithmetic number, because the mean of its divisors is an integer number (33120670).

Almost surely, 2^66241339 is an apocalyptic number.

66241339 is a deficient number, since it is larger than the sum of its proper divisors (1).

66241339 is an equidigital number, since it uses as much as digits as its factorization.

66241339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 66241339 is about 8138.8782396593. The cubic root of 66241339 is about 404.6159830957.

The spelling of 66241339 in words is "sixty-six million, two hundred forty-one thousand, three hundred thirty-nine".