478687164 has 12 divisors (see below), whose sum is σ = 1116936744. Its totient is φ = 159562384.

The previous prime is 478687163. The next prime is 478687171. The reversal of 478687164 is 461786874.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478687163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19945287 + ... + 19945310.

It is an arithmetic number, because the mean of its divisors is an integer number (93078062).

Almost surely, 2^478687164 is an apocalyptic number.

It is an amenable number.

478687164 is an abundant number, since it is smaller than the sum of its proper divisors (638249580).

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

478687164 is a wasteful number, since it uses less digits than its factorization.

478687164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39890604 (or 39890602 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 478687164 is about 21878.9205400998. The cubic root of 478687164 is about 782.2590460089.

The spelling of 478687164 in words is "four hundred seventy-eight million, six hundred eighty-seven thousand, one hundred sixty-four".