683869643 has 2 divisors, whose sum is σ = 683869644. Its totient is φ = 683869642.

The previous prime is 683869639. The next prime is 683869661. The reversal of 683869643 is 346968386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 683869643 - 2² = 683869639 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (683865643) 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, 341934821 + 341934822.

It is an arithmetic number, because the mean of its divisors is an integer number (341934822).

Almost surely, 2^683869643 is an apocalyptic number.

683869643 is a deficient number, since it is larger than the sum of its proper divisors (1).

683869643 is an equidigital number, since it uses as much as digits as its factorization.

683869643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 53.

The square root of 683869643 is about 26150.9013802584. The cubic root of 683869643 is about 881.0308353065.

The spelling of 683869643 in words is "six hundred eighty-three million, eight hundred sixty-nine thousand, six hundred forty-three".