478663 has 4 divisors (see below), whose sum is σ = 482560. Its totient is φ = 474768.

The previous prime is 478651. The next prime is 478679. The reversal of 478663 is 366874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366874 = 2 ⋅183437.

It is a cyclic number.

It is not a de Polignac number, because 478663 - 2⁵ = 478631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478603) 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, 1758 + ... + 2011.

It is an arithmetic number, because the mean of its divisors is an integer number (120640).

2⁴⁷⁸⁶⁶³ is an apocalyptic number.

478663 is a deficient number, since it is larger than the sum of its proper divisors (3897).

478663 is a wasteful number, since it uses less digits than its factorization.

478663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896.

The product of its digits is 24192, while the sum is 34.

The square root of 478663 is about 691.8547535430. The cubic root of 478663 is about 78.2245883045.

The spelling of 478663 in words is "four hundred seventy-eight thousand, six hundred sixty-three".