6809669 has 2 divisors, whose sum is σ = 6809670. Its totient is φ = 6809668.

The previous prime is 6809653. The next prime is 6809683. The reversal of 6809669 is 9669086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6061444 + 748225 = 2462^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 6809669 - 2⁴ = 6809653 is a prime.

It is a super-2 number, since 2×6809669² = 92743183779122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6809629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3404834 + 3404835.

It is an arithmetic number, because the mean of its divisors is an integer number (3404835).

Almost surely, 2^6809669 is an apocalyptic number.

It is an amenable number.

6809669 is a deficient number, since it is larger than the sum of its proper divisors (1).

6809669 is an equidigital number, since it uses as much as digits as its factorization.

6809669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 6809669 is about 2609.5342496315. The cubic root of 6809669 is about 189.5434003671.

The spelling of 6809669 in words is "six million, eight hundred nine thousand, six hundred sixty-nine".