6864651 has 12 divisors (see below), whose sum is σ = 10499112. Its totient is φ = 4307136.

The previous prime is 6864631. The next prime is 6864653. The reversal of 6864651 is 1564686.

6864651 is a `hidden beast` number, since 6 + 8 + 646 + 5 + 1 = 666.

6864651 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6864651 - 2⁶ = 6864587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6864653) 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 11 ways as a sum of consecutive naturals, for example, 22281 + ... + 22586.

It is an arithmetic number, because the mean of its divisors is an integer number (874926).

Almost surely, 2^6864651 is an apocalyptic number.

6864651 is a deficient number, since it is larger than the sum of its proper divisors (3634461).

6864651 is a wasteful number, since it uses less digits than its factorization.

6864651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44890 (or 44887 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 6864651 is about 2620.0479003255. The cubic root of 6864651 is about 190.0521648088.

The spelling of 6864651 in words is "six million, eight hundred sixty-four thousand, six hundred fifty-one".