683769817 has 2 divisors, whose sum is σ = 683769818. Its totient is φ = 683769816.

The previous prime is 683769809. The next prime is 683769839. The reversal of 683769817 is 718967386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 567582976 + 116186841 = 23824^2 + 10779^2 .

It is a cyclic number.

It is not a de Polignac number, because 683769817 - 2³ = 683769809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (683769847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341884908 + 341884909.

It is an arithmetic number, because the mean of its divisors is an integer number (341884909).

Almost surely, 2^683769817 is an apocalyptic number.

It is an amenable number.

683769817 is a deficient number, since it is larger than the sum of its proper divisors (1).

683769817 is an equidigital number, since it uses as much as digits as its factorization.

683769817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 55.

The square root of 683769817 is about 26148.9926574620. The cubic root of 683769817 is about 880.9879645319.

The spelling of 683769817 in words is "six hundred eighty-three million, seven hundred sixty-nine thousand, eight hundred seventeen".