478664568 has 96 divisors (see below), whose sum is σ = 1375545600. Its totient is φ = 149947200.

The previous prime is 478664551. The next prime is 478664573. The reversal of 478664568 is 865466874.

478664568 is a `hidden beast` number, since 4 + 78 + 6 + 6 + 4 + 568 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177873 + ... + 180543.

It is an arithmetic number, because the mean of its divisors is an integer number (14328600).

Almost surely, 2^478664568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478664568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687772800).

478664568 is an abundant number, since it is smaller than the sum of its proper divisors (896881032).

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

478664568 is a wasteful number, since it uses less digits than its factorization.

478664568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833 (or 2826 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The square root of 478664568 is about 21878.4041465551. The cubic root of 478664568 is about 782.2467372021.

The spelling of 478664568 in words is "four hundred seventy-eight million, six hundred sixty-four thousand, five hundred sixty-eight".