6705389 has 2 divisors, whose sum is σ = 6705390. Its totient is φ = 6705388.

The previous prime is 6705373. The next prime is 6705449. The reversal of 6705389 is 9835076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 100489 = 2570^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 6705389 - 2⁴ = 6705373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6705329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3352694 + 3352695.

It is an arithmetic number, because the mean of its divisors is an integer number (3352695).

Almost surely, 2^6705389 is an apocalyptic number.

It is an amenable number.

6705389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6705389 is an equidigital number, since it uses as much as digits as its factorization.

6705389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 6705389 is about 2589.4765880386. The cubic root of 6705389 is about 188.5708936482.

The spelling of 6705389 in words is "six million, seven hundred five thousand, three hundred eighty-nine".