66334273 has 2 divisors, whose sum is σ = 66334274. Its totient is φ = 66334272.

The previous prime is 66334271. The next prime is 66334283. The reversal of 66334273 is 37243366.

66334273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53993104 + 12341169 = 7348^2 + 3513^2 .

It is a cyclic number.

It is not a de Polignac number, because 66334273 - 2¹ = 66334271 is a prime.

Together with 66334271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66334271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33167136 + 33167137.

It is an arithmetic number, because the mean of its divisors is an integer number (33167137).

Almost surely, 2^66334273 is an apocalyptic number.

It is an amenable number.

66334273 is a deficient number, since it is larger than the sum of its proper divisors (1).

66334273 is an equidigital number, since it uses as much as digits as its factorization.

66334273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 34.

The square root of 66334273 is about 8144.5855020375. The cubic root of 66334273 is about 404.8051147923.

The spelling of 66334273 in words is "sixty-six million, three hundred thirty-four thousand, two hundred seventy-three".