665016200687 has 2 divisors, whose sum is σ = 665016200688. Its totient is φ = 665016200686.

The previous prime is 665016200633. The next prime is 665016200707. The reversal of 665016200687 is 786002610566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665016200687 - 2¹⁴ = 665016184303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665016200627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332508100343 + 332508100344.

It is an arithmetic number, because the mean of its divisors is an integer number (332508100344).

Almost surely, 2^665016200687 is an apocalyptic number.

665016200687 is a deficient number, since it is larger than the sum of its proper divisors (1).

665016200687 is an equidigital number, since it uses as much as digits as its factorization.

665016200687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 665016200687 in words is "six hundred sixty-five billion, sixteen million, two hundred thousand, six hundred eighty-seven".