726973 has 4 divisors (see below), whose sum is σ = 782908. Its totient is φ = 671040.

The previous prime is 726953. The next prime is 726983. The reversal of 726973 is 379627.

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

It can be written as a sum of positive squares in 2 ways, for example, as 459684 + 267289 = 678^2 + 517^2 .

It is a cyclic number.

It is not a de Polignac number, because 726973 - 2⁵ = 726941 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 (726923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27948 + ... + 27973.

It is an arithmetic number, because the mean of its divisors is an integer number (195727).

2⁷²⁶⁹⁷³ is an apocalyptic number.

It is an amenable number.

726973 is a deficient number, since it is larger than the sum of its proper divisors (55935).

726973 is a wasteful number, since it uses less digits than its factorization.

726973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55934.

The product of its digits is 15876, while the sum is 34.

The square root of 726973 is about 852.6271166225. The cubic root of 726973 is about 89.9165069295.

The spelling of 726973 in words is "seven hundred twenty-six thousand, nine hundred seventy-three".