6659823 has 16 divisors (see below), whose sum is σ = 9651200. Its totient is φ = 4069440.

The previous prime is 6659813. The next prime is 6659833. The reversal of 6659823 is 3289566.

It is an interprime number because it is at equal distance from previous prime (6659813) and next prime (6659833).

It is not a de Polignac number, because 6659823 - 2⁸ = 6659567 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 (6659803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118 + ... + 3651.

It is an arithmetic number, because the mean of its divisors is an integer number (603200).

Almost surely, 2^6659823 is an apocalyptic number.

6659823 is a deficient number, since it is larger than the sum of its proper divisors (2991377).

6659823 is a wasteful number, since it uses less digits than its factorization.

6659823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822.

The product of its digits is 77760, while the sum is 39.

The square root of 6659823 is about 2580.6632868315. The cubic root of 6659823 is about 188.1427823575.

The spelling of 6659823 in words is "six million, six hundred fifty-nine thousand, eight hundred twenty-three".