683205736321 has 2 divisors, whose sum is σ = 683205736322. Its totient is φ = 683205736320.

The previous prime is 683205736307. The next prime is 683205736373. The reversal of 683205736321 is 123637502386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397580691600 + 285625044721 = 630540^2 + 534439^2 .

It is a cyclic number.

It is not a de Polignac number, because 683205736321 - 2¹¹ = 683205734273 is a prime.

It is not a weakly prime, because it can be changed into another prime (683205737321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341602868160 + 341602868161.

It is an arithmetic number, because the mean of its divisors is an integer number (341602868161).

Almost surely, 2^683205736321 is an apocalyptic number.

It is an amenable number.

683205736321 is a deficient number, since it is larger than the sum of its proper divisors (1).

683205736321 is an equidigital number, since it uses as much as digits as its factorization.

683205736321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 683205736321 in words is "six hundred eighty-three billion, two hundred five million, seven hundred thirty-six thousand, three hundred twenty-one".