6682009 has 2 divisors, whose sum is σ = 6682010. Its totient is φ = 6682008.

The previous prime is 6682007. The next prime is 6682021. The reversal of 6682009 is 9002866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4347225 + 2334784 = 2085^2 + 1528^2 .

It is a cyclic number.

It is not a de Polignac number, because 6682009 - 2¹ = 6682007 is a prime.

Together with 6682007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6682007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3341004 + 3341005.

It is an arithmetic number, because the mean of its divisors is an integer number (3341005).

Almost surely, 2^6682009 is an apocalyptic number.

It is an amenable number.

6682009 is a deficient number, since it is larger than the sum of its proper divisors (1).

6682009 is an equidigital number, since it uses as much as digits as its factorization.

6682009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6682009 is about 2584.9582201653. The cubic root of 6682009 is about 188.3514720480.

The spelling of 6682009 in words is "six million, six hundred eighty-two thousand, nine".