6689047 has 2 divisors, whose sum is σ = 6689048. Its totient is φ = 6689046.

The previous prime is 6689029. The next prime is 6689069. The reversal of 6689047 is 7409866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6689047 - 2⁷ = 6688919 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6689147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3344523 + 3344524.

It is an arithmetic number, because the mean of its divisors is an integer number (3344524).

Almost surely, 2^6689047 is an apocalyptic number.

6689047 is a deficient number, since it is larger than the sum of its proper divisors (1).

6689047 is an equidigital number, since it uses as much as digits as its factorization.

6689047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 6689047 is about 2586.3191991709. The cubic root of 6689047 is about 188.4175775421.

The spelling of 6689047 in words is "six million, six hundred eighty-nine thousand, forty-seven".