66067019 has 2 divisors, whose sum is σ = 66067020. Its totient is φ = 66067018.

The previous prime is 66067003. The next prime is 66067021. The reversal of 66067019 is 91076066.

It is a happy number.

66067019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66067019 - 2⁴ = 66067003 is a prime.

It is a super-2 number, since 2×66067019² = 8729701999092722, which contains 22 as substring.

Together with 66067021, it forms a pair of twin primes.

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 66067019.

It is not a weakly prime, because it can be changed into another prime (66067039) 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, 33033509 + 33033510.

It is an arithmetic number, because the mean of its divisors is an integer number (33033510).

Almost surely, 2^66067019 is an apocalyptic number.

66067019 is a deficient number, since it is larger than the sum of its proper divisors (1).

66067019 is an equidigital number, since it uses as much as digits as its factorization.

66067019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 66067019 is about 8128.1620923798. The cubic root of 66067019 is about 404.2607435990.

The spelling of 66067019 in words is "sixty-six million, sixty-seven thousand, nineteen".