683221683491 has 2 divisors, whose sum is σ = 683221683492. Its totient is φ = 683221683490.

The previous prime is 683221683383. The next prime is 683221683497. The reversal of 683221683491 is 194386122386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 683221683491 - 2²² = 683217489187 is a prime.

It is not a weakly prime, because it can be changed into another prime (683221683497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341610841745 + 341610841746.

It is an arithmetic number, because the mean of its divisors is an integer number (341610841746).

Almost surely, 2^683221683491 is an apocalyptic number.

683221683491 is a deficient number, since it is larger than the sum of its proper divisors (1).

683221683491 is an equidigital number, since it uses as much as digits as its factorization.

683221683491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 53.

The spelling of 683221683491 in words is "six hundred eighty-three billion, two hundred twenty-one million, six hundred eighty-three thousand, four hundred ninety-one".