66334319 has 2 divisors, whose sum is σ = 66334320. Its totient is φ = 66334318.

The previous prime is 66334313. The next prime is 66334361. The reversal of 66334319 is 91343366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66334319 - 2²⁰ = 65285743 is a prime.

It is a super-2 number, since 2×66334319² = 8800483754387522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66334313) 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, 33167159 + 33167160.

It is an arithmetic number, because the mean of its divisors is an integer number (33167160).

Almost surely, 2^66334319 is an apocalyptic number.

66334319 is a deficient number, since it is larger than the sum of its proper divisors (1).

66334319 is an equidigital number, since it uses as much as digits as its factorization.

66334319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 35.

The square root of 66334319 is about 8144.5883259990. The cubic root of 66334319 is about 404.8052083640.

The spelling of 66334319 in words is "sixty-six million, three hundred thirty-four thousand, three hundred nineteen".