66014243 has 2 divisors, whose sum is σ = 66014244. Its totient is φ = 66014242.

The previous prime is 66014239. The next prime is 66014251. The reversal of 66014243 is 34241066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66014243 - 2² = 66014239 is a prime.

It is not a weakly prime, because it can be changed into another prime (66014233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33007121 + 33007122.

It is an arithmetic number, because the mean of its divisors is an integer number (33007122).

Almost surely, 2^66014243 is an apocalyptic number.

66014243 is a deficient number, since it is larger than the sum of its proper divisors (1).

66014243 is an equidigital number, since it uses as much as digits as its factorization.

66014243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 66014243 is about 8124.9149534011. The cubic root of 66014243 is about 404.1530703661.

The spelling of 66014243 in words is "sixty-six million, fourteen thousand, two hundred forty-three".