478678 has 8 divisors (see below), whose sum is σ = 723672. Its totient is φ = 237456.

The previous prime is 478651. The next prime is 478679. The reversal of 478678 is 876874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 478678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478679) by changing a digit.

478678 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 3 ways as a sum of consecutive naturals, for example, 600 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (90459).

2⁴⁷⁸⁶⁷⁸ is an apocalyptic number.

478678 is a deficient number, since it is larger than the sum of its proper divisors (244994).

478678 is a wasteful number, since it uses less digits than its factorization.

478678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886.

The product of its digits is 75264, while the sum is 40.

The square root of 478678 is about 691.8655938837. The cubic root of 478678 is about 78.2254054114.

It can be divided in two parts, 478 and 678, that added together give a square (1156 = 34²).

The spelling of 478678 in words is "four hundred seventy-eight thousand, six hundred seventy-eight".