724501 has 4 divisors (see below), whose sum is σ = 747904. Its totient is φ = 701100.

The previous prime is 724499. The next prime is 724513. The reversal of 724501 is 105427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 105427 = 7 ⋅15061.

It is a cyclic number.

It is not a de Polignac number, because 724501 - 2¹ = 724499 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 (724531) 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, 11655 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (186976).

2⁷²⁴⁵⁰¹ is an apocalyptic number.

It is an amenable number.

724501 is a deficient number, since it is larger than the sum of its proper divisors (23403).

724501 is a wasteful number, since it uses less digits than its factorization.

724501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23402.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 724501 is about 851.1762449693. The cubic root of 724501 is about 89.8144737857.

Adding to 724501 its reverse (105427), we get a palindrome (829928).

It can be divided in two parts, 724 and 501, that added together give a triangular number (1225 = T₄₉).

The spelling of 724501 in words is "seven hundred twenty-four thousand, five hundred one".