724726 has 4 divisors (see below), whose sum is σ = 1087092. Its totient is φ = 362362.

The previous prime is 724723. The next prime is 724729. The reversal of 724726 is 627427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 627427 = 71 ⋅8837.

It is an interprime number because it is at equal distance from previous prime (724723) and next prime (724729).

It is a junction number, because it is equal to n+sod(n) for n = 724694 and 724703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181180 + ... + 181183.

It is an arithmetic number, because the mean of its divisors is an integer number (271773).

2⁷²⁴⁷²⁶ is an apocalyptic number.

724726 is a deficient number, since it is larger than the sum of its proper divisors (362366).

724726 is a wasteful number, since it uses less digits than its factorization.

724726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362365.

The product of its digits is 4704, while the sum is 28.

The square root of 724726 is about 851.3084047512. The cubic root of 724726 is about 89.8237703751.

The spelling of 724726 in words is "seven hundred twenty-four thousand, seven hundred twenty-six".