726073 has 4 divisors (see below), whose sum is σ = 751140. Its totient is φ = 701008.

The previous prime is 726071. The next prime is 726091. The reversal of 726073 is 370627.

726073 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370627 = 457 ⋅811.

It can be written as a sum of positive squares in 2 ways, for example, as 369664 + 356409 = 608^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 726073 - 2¹ = 726071 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726071) 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, 12490 + ... + 12547.

It is an arithmetic number, because the mean of its divisors is an integer number (187785).

2⁷²⁶⁰⁷³ is an apocalyptic number.

It is an amenable number.

726073 is a deficient number, since it is larger than the sum of its proper divisors (25067).

726073 is a wasteful number, since it uses less digits than its factorization.

726073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25066.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 726073 is about 852.0991726319. The cubic root of 726073 is about 89.8793857551.

The spelling of 726073 in words is "seven hundred twenty-six thousand, seventy-three".