478723 has 4 divisors (see below), whose sum is σ = 547120. Its totient is φ = 410328.

The previous prime is 478711. The next prime is 478727. The reversal of 478723 is 327874.

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

It is a cyclic number.

It is not a de Polignac number, because 478723 - 2¹³ = 470531 is a prime.

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

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (478727) 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, 34188 + ... + 34201.

It is an arithmetic number, because the mean of its divisors is an integer number (136780).

2⁴⁷⁸⁷²³ is an apocalyptic number.

478723 is a deficient number, since it is larger than the sum of its proper divisors (68397).

478723 is an equidigital number, since it uses as much as digits as its factorization.

478723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68396.

The product of its digits is 9408, while the sum is 31.

The square root of 478723 is about 691.8981138867. The cubic root of 478723 is about 78.2278566298.

The spelling of 478723 in words is "four hundred seventy-eight thousand, seven hundred twenty-three".