6823649 has 8 divisors (see below), whose sum is σ = 7855680. Its totient is φ = 5805936.

The previous prime is 6823573. The next prime is 6823657. The reversal of 6823649 is 9463286.

6823649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6823649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6823699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2534 + ... + 4479.

It is an arithmetic number, because the mean of its divisors is an integer number (981960).

Almost surely, 2^6823649 is an apocalyptic number.

It is an amenable number.

6823649 is a deficient number, since it is larger than the sum of its proper divisors (1032031).

6823649 is a wasteful number, since it uses less digits than its factorization.

6823649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7159.

The product of its digits is 62208, while the sum is 38.

The square root of 6823649 is about 2612.2115151725. The cubic root of 6823649 is about 189.6730202491.

The spelling of 6823649 in words is "six million, eight hundred twenty-three thousand, six hundred forty-nine".