6698709 has 6 divisors (see below), whose sum is σ = 9675926. Its totient is φ = 4465800.

The previous prime is 6698689. The next prime is 6698729. The reversal of 6698709 is 9078966.

6698709 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6698689) and next prime (6698729).

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 272484 = 2535^2 + 522^2 .

It is not a de Polignac number, because 6698709 - 2⁵ = 6698677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6698729) 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 in 5 ways as a sum of consecutive naturals, for example, 372142 + ... + 372159.

Almost surely, 2^6698709 is an apocalyptic number.

It is an amenable number.

6698709 is a deficient number, since it is larger than the sum of its proper divisors (2977217).

6698709 is a wasteful number, since it uses less digits than its factorization.

6698709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744307 (or 744304 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 6698709 is about 2588.1864306885. The cubic root of 6698709 is about 188.5082538771.

The spelling of 6698709 in words is "six million, six hundred ninety-eight thousand, seven hundred nine".