6804678389 has 2 divisors, whose sum is σ = 6804678390. Its totient is φ = 6804678388.

The previous prime is 6804678379. The next prime is 6804678401. The reversal of 6804678389 is 9838764086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6344919025 + 459759364 = 79655^2 + 21442^2 .

It is a cyclic number.

It is not a de Polignac number, because 6804678389 - 2¹⁶ = 6804612853 is a prime.

It is a super-3 number, since 3×6804678389³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6804678379) 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, 3402339194 + 3402339195.

It is an arithmetic number, because the mean of its divisors is an integer number (3402339195).

Almost surely, 2^6804678389 is an apocalyptic number.

It is an amenable number.

6804678389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6804678389 is an equidigital number, since it uses as much as digits as its factorization.

6804678389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The square root of 6804678389 is about 82490.4745349425. The cubic root of 6804678389 is about 1894.9708541128.

The spelling of 6804678389 in words is "six billion, eight hundred four million, six hundred seventy-eight thousand, three hundred eighty-nine".