6659469 has 16 divisors (see below), whose sum is σ = 9935040. Its totient is φ = 4408560.

The previous prime is 6659447. The next prime is 6659491. The reversal of 6659469 is 9649566.

It is an interprime number because it is at equal distance from previous prime (6659447) and next prime (6659491).

It is not a de Polignac number, because 6659469 - 2⁵ = 6659437 is a prime.

It is a super-2 number, since 2×6659469² = 88697054723922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6 + 6⁶ + 5⁷ + 9⁴ + 4⁸ + 6⁸ + 9⁷ .

6659469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3454 + ... + 5024.

It is an arithmetic number, because the mean of its divisors is an integer number (620940).

Almost surely, 2^6659469 is an apocalyptic number.

It is an amenable number.

6659469 is a deficient number, since it is larger than the sum of its proper divisors (3275571).

6659469 is a wasteful number, since it uses less digits than its factorization.

6659469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737 (or 1731 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 6659469 is about 2580.5946989018. The cubic root of 6659469 is about 188.1394487492.

The spelling of 6659469 in words is "six million, six hundred fifty-nine thousand, four hundred sixty-nine".