6689712 has 20 divisors (see below), whose sum is σ = 17281880. Its totient is φ = 2229888.

The previous prime is 6689701. The next prime is 6689719. The reversal of 6689712 is 2179866.

It is not an unprimeable number, because it can be changed into a prime (6689719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69637 + ... + 69732.

It is an arithmetic number, because the mean of its divisors is an integer number (864094).

Almost surely, 2^6689712 is an apocalyptic number.

It is an amenable number.

6689712 is an abundant number, since it is smaller than the sum of its proper divisors (10592168).

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

6689712 is a wasteful number, since it uses less digits than its factorization.

6689712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139380 (or 139374 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 6689712 is about 2586.4477570599. The cubic root of 6689712 is about 188.4238212585.

The spelling of 6689712 in words is "six million, six hundred eighty-nine thousand, seven hundred twelve".