6824009 has 4 divisors (see below), whose sum is σ = 6935940. Its totient is φ = 6712080.

The previous prime is 6824003. The next prime is 6824039. The reversal of 6824009 is 9004286.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64009 + 6760000 = 253^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 6824009 - 2¹² = 6819913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6824003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55874 + ... + 55995.

It is an arithmetic number, because the mean of its divisors is an integer number (1733985).

Almost surely, 2^6824009 is an apocalyptic number.

It is an amenable number.

6824009 is a deficient number, since it is larger than the sum of its proper divisors (111931).

6824009 is a wasteful number, since it uses less digits than its factorization.

6824009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111930.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 6824009 is about 2612.2804213943. The cubic root of 6824009 is about 189.6763557610.

The spelling of 6824009 in words is "six million, eight hundred twenty-four thousand, nine".