6823645 has 8 divisors (see below), whose sum is σ = 8327520. Its totient is φ = 5366160.

The previous prime is 6823573. The next prime is 6823657. The reversal of 6823645 is 5463286.

It is a happy number.

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

It is not a de Polignac number, because 6823645 - 2¹¹ = 6821597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6823645.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11271 + ... + 11860.

It is an arithmetic number, because the mean of its divisors is an integer number (1040940).

Almost surely, 2^6823645 is an apocalyptic number.

It is an amenable number.

6823645 is a deficient number, since it is larger than the sum of its proper divisors (1503875).

6823645 is a wasteful number, since it uses less digits than its factorization.

6823645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23195.

The product of its digits is 34560, while the sum is 34.

The square root of 6823645 is about 2612.2107495376. The cubic root of 6823645 is about 189.6729831872.

The spelling of 6823645 in words is "six million, eight hundred twenty-three thousand, six hundred forty-five".