6689499 has 4 divisors (see below), whose sum is σ = 8919336. Its totient is φ = 4459664.

The previous prime is 6689497. The next prime is 6689503. The reversal of 6689499 is 9949866.

6689499 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6689499 - 2¹ = 6689497 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6689491) 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, 1114914 + ... + 1114919.

It is an arithmetic number, because the mean of its divisors is an integer number (2229834).

Almost surely, 2^6689499 is an apocalyptic number.

6689499 is a deficient number, since it is larger than the sum of its proper divisors (2229837).

6689499 is a wasteful number, since it uses less digits than its factorization.

6689499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229836.

The product of its digits is 839808, while the sum is 51.

The square root of 6689499 is about 2586.4065805669. The cubic root of 6689499 is about 188.4218214364.

The spelling of 6689499 in words is "six million, six hundred eighty-nine thousand, four hundred ninety-nine".