6689701 has 2 divisors, whose sum is σ = 6689702. Its totient is φ = 6689700.

The previous prime is 6689699. The next prime is 6689719. The reversal of 6689701 is 1079866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5832225 + 857476 = 2415^2 + 926^2 .

It is a cyclic number.

It is not a de Polignac number, because 6689701 - 2¹ = 6689699 is a prime.

Together with 6689699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6689741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3344850 + 3344851.

It is an arithmetic number, because the mean of its divisors is an integer number (3344851).

Almost surely, 2^6689701 is an apocalyptic number.

It is an amenable number.

6689701 is a deficient number, since it is larger than the sum of its proper divisors (1).

6689701 is an equidigital number, since it uses as much as digits as its factorization.

6689701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 6689701 is about 2586.4456305904. The cubic root of 6689701 is about 188.4237179823.

The spelling of 6689701 in words is "six million, six hundred eighty-nine thousand, seven hundred one".