6689706 has 16 divisors (see below), whose sum is σ = 13404864. Its totient is φ = 2225664.

The previous prime is 6689701. The next prime is 6689719. The reversal of 6689706 is 6079866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6689701) 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 in 7 ways as a sum of consecutive naturals, for example, 5226 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (837804).

Almost surely, 2^6689706 is an apocalyptic number.

6689706 is an abundant number, since it is smaller than the sum of its proper divisors (6715158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6689706 is a wasteful number, since it uses less digits than its factorization.

6689706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 6689706 is about 2586.4465971676. The cubic root of 6689706 is about 188.4237649260.

The spelling of 6689706 in words is "six million, six hundred eighty-nine thousand, seven hundred six".