6609823 has 4 divisors (see below), whose sum is σ = 7210728. Its totient is φ = 6008920.

The previous prime is 6609803. The next prime is 6609833. The reversal of 6609823 is 3289066.

It is a happy number.

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 6609823 - 2¹³ = 6601631 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 (6609803) 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, 300436 + ... + 300457.

It is an arithmetic number, because the mean of its divisors is an integer number (1802682).

Almost surely, 2^6609823 is an apocalyptic number.

6609823 is a deficient number, since it is larger than the sum of its proper divisors (600905).

6609823 is a wasteful number, since it uses less digits than its factorization.

6609823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600904.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 6609823 is about 2570.9576036956. The cubic root of 6609823 is about 187.6707588108.

The spelling of 6609823 in words is "six million, six hundred nine thousand, eight hundred twenty-three".