478521806 has 16 divisors (see below), whose sum is σ = 825069024. Its totient is φ = 203894304.

The previous prime is 478521803. The next prime is 478521889. The reversal of 478521806 is 608125874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478521803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96365 + ... + 101208.

It is an arithmetic number, because the mean of its divisors is an integer number (51566814).

Almost surely, 2^478521806 is an apocalyptic number.

478521806 is a deficient number, since it is larger than the sum of its proper divisors (346547218).

478521806 is a wasteful number, since it uses less digits than its factorization.

478521806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197755.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 478521806 is about 21875.1412795438. The cubic root of 478521806 is about 782.1689609468.

The spelling of 478521806 in words is "four hundred seventy-eight million, five hundred twenty-one thousand, eight hundred six".