6478985 has 16 divisors (see below), whose sum is σ = 8273664. Its totient is φ = 4859712.

The previous prime is 6478973. The next prime is 6478991. The reversal of 6478985 is 5898746.

It is a cyclic number.

It is not a de Polignac number, because 6478985 - 2⁸ = 6478729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5564 + ... + 6626.

It is an arithmetic number, because the mean of its divisors is an integer number (517104).

Almost surely, 2^6478985 is an apocalyptic number.

It is an amenable number.

6478985 is a deficient number, since it is larger than the sum of its proper divisors (1794679).

6478985 is a wasteful number, since it uses less digits than its factorization.

6478985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144.

The product of its digits is 483840, while the sum is 47.

The square root of 6478985 is about 2545.3850396355. The cubic root of 6478985 is about 186.4242157718.

The spelling of 6478985 in words is "six million, four hundred seventy-eight thousand, nine hundred eighty-five".