6789402817 has 2 divisors, whose sum is σ = 6789402818. Its totient is φ = 6789402816.

The previous prime is 6789402797. The next prime is 6789402847. The reversal of 6789402817 is 7182049876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6783828496 + 5574321 = 82364^2 + 2361^2 .

It is a cyclic number.

It is not a de Polignac number, because 6789402817 - 2³¹ = 4641919169 is a prime.

It is a super-2 number, since 2×6789402817² = 92191981222975070978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6789402847) 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, 3394701408 + 3394701409.

It is an arithmetic number, because the mean of its divisors is an integer number (3394701409).

Almost surely, 2^6789402817 is an apocalyptic number.

It is an amenable number.

6789402817 is a deficient number, since it is larger than the sum of its proper divisors (1).

6789402817 is an equidigital number, since it uses as much as digits as its factorization.

6789402817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The square root of 6789402817 is about 82397.8325989222. The cubic root of 6789402817 is about 1893.5518082923.

The spelling of 6789402817 in words is "six billion, seven hundred eighty-nine million, four hundred two thousand, eight hundred seventeen".