726799 has 4 divisors (see below), whose sum is σ = 730080. Its totient is φ = 723520.

The previous prime is 726797. The next prime is 726809. The reversal of 726799 is 997627.

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 726799 - 2¹ = 726797 is a prime.

It is a Duffinian number.

726799 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726797) 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, 1282 + ... + 1759.

It is an arithmetic number, because the mean of its divisors is an integer number (182520).

2⁷²⁶⁷⁹⁹ is an apocalyptic number.

726799 is a deficient number, since it is larger than the sum of its proper divisors (3281).

726799 is a wasteful number, since it uses less digits than its factorization.

726799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280.

The product of its digits is 47628, while the sum is 40.

The square root of 726799 is about 852.5250729451. The cubic root of 726799 is about 89.9093325592.

The spelling of 726799 in words is "seven hundred twenty-six thousand, seven hundred ninety-nine".