6864816 has 40 divisors (see below), whose sum is σ = 20268544. Its totient is φ = 1961280.

The previous prime is 6864811. The next prime is 6864839. The reversal of 6864816 is 6184686.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (6864811) by changing a digit.

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, 9880 + ... + 10551.

Almost surely, 2^6864816 is an apocalyptic number.

It is an amenable number.

6864816 is an abundant number, since it is smaller than the sum of its proper divisors (13403728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6864816 is a wasteful number, since it uses less digits than its factorization.

6864816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20449 (or 20443 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 6864816 is about 2620.0793881102. The cubic root of 6864816 is about 190.0536875061.

The spelling of 6864816 in words is "six million, eight hundred sixty-four thousand, eight hundred sixteen".