478831664 has 20 divisors (see below), whose sum is σ = 968073456. Its totient is φ = 229006272.

The previous prime is 478831657. The next prime is 478831667. The reversal of 478831664 is 466138874.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (478831667) by changing a digit.

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, 650219 + ... + 650954.

Almost surely, 2^478831664 is an apocalyptic number.

It is an amenable number.

478831664 is an abundant number, since it is smaller than the sum of its proper divisors (489241792).

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

478831664 is a wasteful number, since it uses less digits than its factorization.

478831664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301204 (or 1301198 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 478831664 is about 21882.2225562213. Note that the first 3 decimals coincide. The cubic root of 478831664 is about 782.3377508977.

The spelling of 478831664 in words is "four hundred seventy-eight million, eight hundred thirty-one thousand, six hundred sixty-four".