6864845 has 8 divisors (see below), whose sum is σ = 8871576. Its totient is φ = 5069376.

The previous prime is 6864841. The next prime is 6864853. The reversal of 6864845 is 5484686.

It can be written as a sum of positive squares in 4 ways, for example, as 644809 + 6220036 = 803^2 + 2494^2 .

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

It is not a de Polignac number, because 6864845 - 2² = 6864841 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 (6864841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52742 + ... + 52871.

It is an arithmetic number, because the mean of its divisors is an integer number (1108947).

Almost surely, 2^6864845 is an apocalyptic number.

6864845 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6864845 is a deficient number, since it is larger than the sum of its proper divisors (2006731).

6864845 is a wasteful number, since it uses less digits than its factorization.

6864845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105631.

The product of its digits is 184320, while the sum is 41.

The square root of 6864845 is about 2620.0849222878. The cubic root of 6864845 is about 190.0539551291.

The spelling of 6864845 in words is "six million, eight hundred sixty-four thousand, eight hundred forty-five".