6784489 has 2 divisors, whose sum is σ = 6784490. Its totient is φ = 6784488.

The previous prime is 6784457. The next prime is 6784499. The reversal of 6784489 is 9844876.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3515625 + 3268864 = 1875^2 + 1808^2 .

It is a cyclic number.

It is not a de Polignac number, because 6784489 - 2⁵ = 6784457 is a prime.

It is a super-2 number, since 2×6784489² = 92058581982242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6784409) 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, 3392244 + 3392245.

It is an arithmetic number, because the mean of its divisors is an integer number (3392245).

Almost surely, 2^6784489 is an apocalyptic number.

It is an amenable number.

6784489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6784489 is an equidigital number, since it uses as much as digits as its factorization.

6784489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 6784489 is about 2604.7051656570. The cubic root of 6784489 is about 189.3094879903.

The spelling of 6784489 in words is "six million, seven hundred eighty-four thousand, four hundred eighty-nine".