6689975 has 12 divisors (see below), whose sum is σ = 8414640. Its totient is φ = 5275200.

The previous prime is 6689971. The next prime is 6689989. The reversal of 6689975 is 5799866.

It is not a de Polignac number, because 6689975 - 2² = 6689971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6689971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110 + ... + 3659.

It is an arithmetic number, because the mean of its divisors is an integer number (701220).

Almost surely, 2^6689975 is an apocalyptic number.

6689975 is a deficient number, since it is larger than the sum of its proper divisors (1724665).

6689975 is a wasteful number, since it uses less digits than its factorization.

6689975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850 (or 3845 counting only the distinct ones).

The product of its digits is 816480, while the sum is 50.

The square root of 6689975 is about 2586.4985984918. The cubic root of 6689975 is about 188.4262904637.

The spelling of 6689975 in words is "six million, six hundred eighty-nine thousand, nine hundred seventy-five".