66000419 has 2 divisors, whose sum is σ = 66000420. Its totient is φ = 66000418.

The previous prime is 66000373. The next prime is 66000421. The reversal of 66000419 is 91400066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66000419 - 2²⁴ = 49223203 is a prime.

It is a super-2 number, since 2×66000419² = 8712110616351122, which contains 22 as substring.

Together with 66000421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66000469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33000209 + 33000210.

It is an arithmetic number, because the mean of its divisors is an integer number (33000210).

Almost surely, 2^66000419 is an apocalyptic number.

66000419 is a deficient number, since it is larger than the sum of its proper divisors (1).

66000419 is an equidigital number, since it uses as much as digits as its factorization.

66000419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 66000419 is about 8124.0641922624. The cubic root of 66000419 is about 404.1248572521.

The spelling of 66000419 in words is "sixty-six million, four hundred nineteen", and thus it is an aban number.