6659199 has 8 divisors (see below), whose sum is σ = 9865520. Its totient is φ = 4439448.

The previous prime is 6659113. The next prime is 6659201. The reversal of 6659199 is 9919566.

It is not a de Polignac number, because 6659199 - 2¹⁹ = 6134911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123292 + ... + 123345.

It is an arithmetic number, because the mean of its divisors is an integer number (1233190).

Almost surely, 2^6659199 is an apocalyptic number.

6659199 is a deficient number, since it is larger than the sum of its proper divisors (3206321).

6659199 is a wasteful number, since it uses less digits than its factorization.

6659199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246646 (or 246640 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 6659199 is about 2580.5423848486. The cubic root of 6659199 is about 188.1369060871.

The spelling of 6659199 in words is "six million, six hundred fifty-nine thousand, one hundred ninety-nine".