724065613 has 4 divisors (see below), whose sum is σ = 727312768. Its totient is φ = 720818460.

The previous prime is 724065577. The next prime is 724065637. The reversal of 724065613 is 316560427.

It is a happy number.

724065613 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, 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 724065613 - 2²⁵ = 690511181 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 (724065673) 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, 1623243 + ... + 1623688.

It is an arithmetic number, because the mean of its divisors is an integer number (181828192).

Almost surely, 2^724065613 is an apocalyptic number.

It is an amenable number.

724065613 is a deficient number, since it is larger than the sum of its proper divisors (3247155).

724065613 is a wasteful number, since it uses less digits than its factorization.

724065613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247154.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 724065613 is about 26908.4673104954. The cubic root of 724065613 is about 897.9647892206.

The spelling of 724065613 in words is "seven hundred twenty-four million, sixty-five thousand, six hundred thirteen".