478687564 has 24 divisors (see below), whose sum is σ = 889092288. Its totient is φ = 224728320.

The previous prime is 478687553. The next prime is 478687589. The reversal of 478687564 is 465786874.

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 7 ways as a sum of consecutive naturals, for example, 21142 + ... + 37474.

It is an arithmetic number, because the mean of its divisors is an integer number (37045512).

Almost surely, 2^478687564 is an apocalyptic number.

It is an amenable number.

478687564 is a deficient number, since it is larger than the sum of its proper divisors (410404724).

478687564 is a wasteful number, since it uses less digits than its factorization.

478687564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16785 (or 16783 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 55.

The square root of 478687564 is about 21878.9296813167. The cubic root of 478687564 is about 782.2592638990.

The spelling of 478687564 in words is "four hundred seventy-eight million, six hundred eighty-seven thousand, five hundred sixty-four".