66048419 has 2 divisors, whose sum is σ = 66048420. Its totient is φ = 66048418.

The previous prime is 66048407. The next prime is 66048439. The reversal of 66048419 is 91484066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66048419 - 2²⁰ = 64999843 is a prime.

It is a super-2 number, since 2×66048419² = 8724787304799122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66048439) 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, 33024209 + 33024210.

It is an arithmetic number, because the mean of its divisors is an integer number (33024210).

Almost surely, 2^66048419 is an apocalyptic number.

66048419 is a deficient number, since it is larger than the sum of its proper divisors (1).

66048419 is an equidigital number, since it uses as much as digits as its factorization.

66048419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 66048419 is about 8127.0178417424. The cubic root of 66048419 is about 404.2228025522. Note that the first 3 decimals are identical.

The spelling of 66048419 in words is "sixty-six million, forty-eight thousand, four hundred nineteen".