6605645339 has 2 divisors, whose sum is σ = 6605645340. Its totient is φ = 6605645338.

The previous prime is 6605645303. The next prime is 6605645351. The reversal of 6605645339 is 9335465066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6605645339 - 2¹⁶ = 6605579803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6605645293 and 6605645302.

It is not a weakly prime, because it can be changed into another prime (6605645639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302822669 + 3302822670.

It is an arithmetic number, because the mean of its divisors is an integer number (3302822670).

Almost surely, 2^6605645339 is an apocalyptic number.

6605645339 is a deficient number, since it is larger than the sum of its proper divisors (1).

6605645339 is an equidigital number, since it uses as much as digits as its factorization.

6605645339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 47.

The square root of 6605645339 is about 81275.1212795158. The cubic root of 6605645339 is about 1876.3121211158.

The spelling of 6605645339 in words is "six billion, six hundred five million, six hundred forty-five thousand, three hundred thirty-nine".