6809690 has 32 divisors (see below), whose sum is σ = 13308624. Its totient is φ = 2498560.

The previous prime is 6809687. The next prime is 6809701. The reversal of 6809690 is 969086.

It can be written as a sum of positive squares in 8 ways, for example, as 3806401 + 3003289 = 1951^2 + 1733^2 .

It is a super-2 number, since 2×6809690² = 92743755792200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6482 + ... + 7458.

Almost surely, 2^6809690 is an apocalyptic number.

6809690 is a deficient number, since it is larger than the sum of its proper divisors (6498934).

6809690 is a wasteful number, since it uses less digits than its factorization.

6809690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 6809690 is about 2609.5382733350. The cubic root of 6809690 is about 189.5435952080.

It can be divided in two parts, 68096 and 90, that added together give a palindrome (68186).

The spelling of 6809690 in words is "six million, eight hundred nine thousand, six hundred ninety".