830669681729 has 2 divisors, whose sum is σ = 830669681730. Its totient is φ = 830669681728.

The previous prime is 830669681711. The next prime is 830669681731. The reversal of 830669681729 is 927186966038.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 609250497025 + 221419184704 = 780545^2 + 470552^2 .

It is a cyclic number.

It is not a de Polignac number, because 830669681729 - 2⁸ = 830669681473 is a prime.

It is a Sophie Germain prime.

Together with 830669681731, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (830669683729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415334840864 + 415334840865.

It is an arithmetic number, because the mean of its divisors is an integer number (415334840865).

Almost surely, 2^830669681729 is an apocalyptic number.

It is an amenable number.

830669681729 is a deficient number, since it is larger than the sum of its proper divisors (1).

830669681729 is an equidigital number, since it uses as much as digits as its factorization.

830669681729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 830669681729 in words is "eight hundred thirty billion, six hundred sixty-nine million, six hundred eighty-one thousand, seven hundred twenty-nine".