66014239 has 2 divisors, whose sum is σ = 66014240. Its totient is φ = 66014238.

The previous prime is 66014233. The next prime is 66014243. The reversal of 66014239 is 93241066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66014239 - 2³ = 66014231 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66014239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66014231) 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, 33007119 + 33007120.

It is an arithmetic number, because the mean of its divisors is an integer number (33007120).

Almost surely, 2^66014239 is an apocalyptic number.

66014239 is a deficient number, since it is larger than the sum of its proper divisors (1).

66014239 is an equidigital number, since it uses as much as digits as its factorization.

66014239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 66014239 is about 8124.9147072446. The cubic root of 66014239 is about 404.1530622031.

The spelling of 66014239 in words is "sixty-six million, fourteen thousand, two hundred thirty-nine".