6478986 has 8 divisors (see below), whose sum is σ = 12957984. Its totient is φ = 2159660.

The previous prime is 6478973. The next prime is 6478991. The reversal of 6478986 is 6898746.

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

6478986 is an admirable number.

It is a d-powerful number, because it can be written as 6⁶ + 4¹¹ + 7⁴ + 8⁵ + 9⁵ + 8⁷ + 6⁶ .

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 3 ways as a sum of consecutive naturals, for example, 539910 + ... + 539921.

It is an arithmetic number, because the mean of its divisors is an integer number (1619748).

Almost surely, 2^6478986 is an apocalyptic number.

6478986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6478986 is a wasteful number, since it uses less digits than its factorization.

6478986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079836.

The product of its digits is 580608, while the sum is 48.

The square root of 6478986 is about 2545.3852360694. The cubic root of 6478986 is about 186.4242253630.

The spelling of 6478986 in words is "six million, four hundred seventy-eight thousand, nine hundred eighty-six".