478565 has 4 divisors (see below), whose sum is σ = 574284. Its totient is φ = 382848.

The previous prime is 478531. The next prime is 478571. The reversal of 478565 is 565874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 214369 + 264196 = 463^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 478565 - 2¹⁴ = 462181 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 47852 + ... + 47861.

It is an arithmetic number, because the mean of its divisors is an integer number (143571).

2⁴⁷⁸⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

478565 is a deficient number, since it is larger than the sum of its proper divisors (95719).

478565 is an equidigital number, since it uses as much as digits as its factorization.

478565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95718.

The product of its digits is 33600, while the sum is 35.

The square root of 478565 is about 691.7839258034. The cubic root of 478565 is about 78.2192494524.

The spelling of 478565 in words is "four hundred seventy-eight thousand, five hundred sixty-five".