724543 has 4 divisors (see below), whose sum is σ = 728728. Its totient is φ = 720360.

The previous prime is 724531. The next prime is 724547. The reversal of 724543 is 345427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345427 = 223 ⋅1549.

It is a cyclic number.

It is not a de Polignac number, because 724543 - 2¹³ = 716351 is a prime.

It is a Duffinian number.

724543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724547) 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, 1821 + ... + 2182.

It is an arithmetic number, because the mean of its divisors is an integer number (182182).

2⁷²⁴⁵⁴³ is an apocalyptic number.

724543 is a deficient number, since it is larger than the sum of its proper divisors (4185).

724543 is a wasteful number, since it uses less digits than its factorization.

724543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184.

The product of its digits is 3360, while the sum is 25.

The square root of 724543 is about 851.2009163529. The cubic root of 724543 is about 89.8162092951.

The spelling of 724543 in words is "seven hundred twenty-four thousand, five hundred forty-three".