724328641 has 4 divisors (see below), whose sum is σ = 726657984. Its totient is φ = 721999300.

The previous prime is 724328629. The next prime is 724328677. The reversal of 724328641 is 146823427.

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.

It is a cyclic number.

It is not a de Polignac number, because 724328641 - 2¹⁹ = 723804353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 724328641.

It is not an unprimeable number, because it can be changed into a prime (724328611) 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, 1164205 + ... + 1164826.

It is an arithmetic number, because the mean of its divisors is an integer number (181664496).

Almost surely, 2^724328641 is an apocalyptic number.

It is an amenable number.

724328641 is a deficient number, since it is larger than the sum of its proper divisors (2329343).

724328641 is a wasteful number, since it uses less digits than its factorization.

724328641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329342.

The product of its digits is 64512, while the sum is 37.

The square root of 724328641 is about 26913.3543245728. The cubic root of 724328641 is about 898.0735092428.

The spelling of 724328641 in words is "seven hundred twenty-four million, three hundred twenty-eight thousand, six hundred forty-one".