6663690419 has 2 divisors, whose sum is σ = 6663690420. Its totient is φ = 6663690418.

The previous prime is 6663690403. The next prime is 6663690421. The reversal of 6663690419 is 9140963666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6663690419 - 2⁴ = 6663690403 is a prime.

It is a super-2 number, since 2×6663690419² = 88809540000544791122, which contains 22 as substring.

Together with 6663690421, 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 (6663630419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331845209 + 3331845210.

It is an arithmetic number, because the mean of its divisors is an integer number (3331845210).

Almost surely, 2^6663690419 is an apocalyptic number.

6663690419 is a deficient number, since it is larger than the sum of its proper divisors (1).

6663690419 is an equidigital number, since it uses as much as digits as its factorization.

6663690419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The square root of 6663690419 is about 81631.4303378300. The cubic root of 6663690419 is about 1881.7919404445.

The spelling of 6663690419 in words is "six billion, six hundred sixty-three million, six hundred ninety thousand, four hundred nineteen".