724019723 has 4 divisors (see below), whose sum is σ = 827451120. Its totient is φ = 620588328.

The previous prime is 724019683. The next prime is 724019789. The reversal of 724019723 is 327910427.

724019723 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 724019723 - 2¹⁸ = 723757579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724019623) 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, 51715688 + ... + 51715701.

It is an arithmetic number, because the mean of its divisors is an integer number (206862780).

Almost surely, 2^724019723 is an apocalyptic number.

724019723 is a deficient number, since it is larger than the sum of its proper divisors (103431397).

724019723 is a wasteful number, since it uses less digits than its factorization.

724019723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103431396.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 724019723 is about 26907.6145914126. The cubic root of 724019723 is about 897.9458183456.

The spelling of 724019723 in words is "seven hundred twenty-four million, nineteen thousand, seven hundred twenty-three".