726499 has 4 divisors (see below), whose sum is σ = 735336. Its totient is φ = 717664.

The previous prime is 726497. The next prime is 726521. The reversal of 726499 is 994627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 994627 = 761 ⋅1307.

It is a cyclic number.

It is not a de Polignac number, because 726499 - 2¹ = 726497 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 (726497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4294 + ... + 4459.

It is an arithmetic number, because the mean of its divisors is an integer number (183834).

2⁷²⁶⁴⁹⁹ is an apocalyptic number.

726499 is a deficient number, since it is larger than the sum of its proper divisors (8837).

726499 is an equidigital number, since it uses as much as digits as its factorization.

726499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8836.

The product of its digits is 27216, while the sum is 37.

The square root of 726499 is about 852.3491068805. The cubic root of 726499 is about 89.8969602656.

It can be divided in two parts, 726 and 499, that added together give a triangular number (1225 = T₄₉).

The spelling of 726499 in words is "seven hundred twenty-six thousand, four hundred ninety-nine".