478646 has 16 divisors (see below), whose sum is σ = 829440. Its totient is φ = 202920.

The previous prime is 478637. The next prime is 478651. The reversal of 478646 is 646874.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

478646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411 + ... + 2601.

It is an arithmetic number, because the mean of its divisors is an integer number (51840).

2⁴⁷⁸⁶⁴⁶ is an apocalyptic number.

478646 is a deficient number, since it is larger than the sum of its proper divisors (350794).

478646 is a wasteful number, since it uses less digits than its factorization.

478646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379.

The product of its digits is 32256, while the sum is 35.

The square root of 478646 is about 691.8424676182. The cubic root of 478646 is about 78.2236622293.

The spelling of 478646 in words is "four hundred seventy-eight thousand, six hundred forty-six".