6606815819 has 2 divisors, whose sum is σ = 6606815820. Its totient is φ = 6606815818.

The previous prime is 6606815783. The next prime is 6606815827. The reversal of 6606815819 is 9185186066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6606815819 - 2²⁰ = 6605767243 is a prime.

It is a super-2 number, since 2×6606815819² = 87300030532377281522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6606815219) 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, 3303407909 + 3303407910.

It is an arithmetic number, because the mean of its divisors is an integer number (3303407910).

Almost surely, 2^6606815819 is an apocalyptic number.

6606815819 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606815819 is an equidigital number, since it uses as much as digits as its factorization.

6606815819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 6606815819 is about 81282.3216880522. The cubic root of 6606815819 is about 1876.4229382525.

The spelling of 6606815819 in words is "six billion, six hundred six million, eight hundred fifteen thousand, eight hundred nineteen".