724140723 has 4 divisors (see below), whose sum is σ = 965520968. Its totient is φ = 482760480.

The previous prime is 724140719. The next prime is 724140731. The reversal of 724140723 is 327041427.

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

It is not a de Polignac number, because 724140723 - 2² = 724140719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724140323) 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, 120690118 + ... + 120690123.

It is an arithmetic number, because the mean of its divisors is an integer number (241380242).

Almost surely, 2^724140723 is an apocalyptic number.

724140723 is a deficient number, since it is larger than the sum of its proper divisors (241380245).

724140723 is a wasteful number, since it uses less digits than its factorization.

724140723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241380244.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 724140723 is about 26909.8629316465. The cubic root of 724140723 is about 897.9958378816.

The spelling of 724140723 in words is "seven hundred twenty-four million, one hundred forty thousand, seven hundred twenty-three".