6689798 has 4 divisors (see below), whose sum is σ = 10034700. Its totient is φ = 3344898.

The previous prime is 6689797. The next prime is 6689801. The reversal of 6689798 is 8979866.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6689791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1672448 + ... + 1672451.

It is an arithmetic number, because the mean of its divisors is an integer number (2508675).

Almost surely, 2^6689798 is an apocalyptic number.

6689798 is a deficient number, since it is larger than the sum of its proper divisors (3344902).

6689798 is a wasteful number, since it uses less digits than its factorization.

6689798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344901.

The product of its digits is 1306368, while the sum is 53.

The square root of 6689798 is about 2586.4643821248. The cubic root of 6689798 is about 188.4246286863.

The spelling of 6689798 in words is "six million, six hundred eighty-nine thousand, seven hundred ninety-eight".