724493745 has 24 divisors (see below), whose sum is σ = 1277078400. Its totient is φ = 379846176.

The previous prime is 724493741. The next prime is 724493771. The reversal of 724493745 is 547394427.

It is not a de Polignac number, because 724493745 - 2² = 724493741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 724493745.

It is not an unprimeable number, because it can be changed into a prime (724493741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133785 + ... + 139094.

It is an arithmetic number, because the mean of its divisors is an integer number (53211600).

Almost surely, 2^724493745 is an apocalyptic number.

It is an amenable number.

724493745 is a deficient number, since it is larger than the sum of its proper divisors (552584655).

724493745 is a wasteful number, since it uses less digits than its factorization.

724493745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272949 (or 272946 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 724493745 is about 26916.4214746314. The cubic root of 724493745 is about 898.1417399030.

The spelling of 724493745 in words is "seven hundred twenty-four million, four hundred ninety-three thousand, seven hundred forty-five".