478660664 has 16 divisors (see below), whose sum is σ = 898824600. Its totient is φ = 238974112.

The previous prime is 478660639. The next prime is 478660667. The reversal of 478660664 is 466066874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478660667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38774 + ... + 49605.

Almost surely, 2^478660664 is an apocalyptic number.

It is an amenable number.

478660664 is a deficient number, since it is larger than the sum of its proper divisors (420163936).

478660664 is a wasteful number, since it uses less digits than its factorization.

478660664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89062 (or 89058 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 47.

The square root of 478660664 is about 21878.3149259718. The cubic root of 478660664 is about 782.2446105217.

The spelling of 478660664 in words is "four hundred seventy-eight million, six hundred sixty thousand, six hundred sixty-four".