724637243 has 4 divisors (see below), whose sum is σ = 790513368. Its totient is φ = 658761120.

The previous prime is 724637197. The next prime is 724637261. The reversal of 724637243 is 342736427.

It is a happy number.

724637243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 724637243 - 2⁸ = 724636987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 724637197 and 724637206.

It is not an unprimeable number, because it can be changed into a prime (724637273) 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, 32938046 + ... + 32938067.

It is an arithmetic number, because the mean of its divisors is an integer number (197628342).

Almost surely, 2^724637243 is an apocalyptic number.

724637243 is a deficient number, since it is larger than the sum of its proper divisors (65876125).

724637243 is a wasteful number, since it uses less digits than its factorization.

724637243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65876124.

The product of its digits is 169344, while the sum is 38.

The square root of 724637243 is about 26919.0869644570. The cubic root of 724637243 is about 898.2010332768.

The spelling of 724637243 in words is "seven hundred twenty-four million, six hundred thirty-seven thousand, two hundred forty-three".