6986789 has 2 divisors, whose sum is σ = 6986790. Its totient is φ = 6986788.

The previous prime is 6986783. The next prime is 6986801. The reversal of 6986789 is 9876896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5841889 + 1144900 = 2417^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 6986789 - 2⁴ = 6986773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6986789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6986783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3493394 + 3493395.

It is an arithmetic number, because the mean of its divisors is an integer number (3493395).

Almost surely, 2^6986789 is an apocalyptic number.

It is an amenable number.

6986789 is a deficient number, since it is larger than the sum of its proper divisors (1).

6986789 is an equidigital number, since it uses as much as digits as its factorization.

6986789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The square root of 6986789 is about 2643.2534876549. The cubic root of 6986789 is about 191.1727009017.

The spelling of 6986789 in words is "six million, nine hundred eighty-six thousand, seven hundred eighty-nine".