6689907 has 12 divisors (see below), whose sum is σ = 11043760. Its totient is φ = 3822768.

The previous prime is 6689873. The next prime is 6689909. The reversal of 6689907 is 7099866.

It is not a de Polignac number, because 6689907 - 2⁷ = 6689779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6689909) 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 11 ways as a sum of consecutive naturals, for example, 53032 + ... + 53157.

Almost surely, 2^6689907 is an apocalyptic number.

6689907 is a deficient number, since it is larger than the sum of its proper divisors (4353853).

6689907 is a wasteful number, since it uses less digits than its factorization.

6689907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106202 (or 106199 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 6689907 is about 2586.4854532744. The cubic root of 6689907 is about 188.4256520442.

The spelling of 6689907 in words is "six million, six hundred eighty-nine thousand, nine hundred seven".