727423 has 4 divisors (see below), whose sum is σ = 729520. Its totient is φ = 725328.

The previous prime is 727409. The next prime is 727427. The reversal of 727423 is 324727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324727 = 13 ⋅24979.

It is a cyclic number.

It is not a de Polignac number, because 727423 - 2⁹ = 726911 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 (727427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390 + ... + 1267.

It is an arithmetic number, because the mean of its divisors is an integer number (182380).

2⁷²⁷⁴²³ is an apocalyptic number.

727423 is a deficient number, since it is larger than the sum of its proper divisors (2097).

727423 is a wasteful number, since it uses less digits than its factorization.

727423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096.

The product of its digits is 2352, while the sum is 25.

The square root of 727423 is about 852.8909660678. The cubic root of 727423 is about 89.9350560284.

The spelling of 727423 in words is "seven hundred twenty-seven thousand, four hundred twenty-three", and thus it is an iban number.