726772 has 6 divisors (see below), whose sum is σ = 1271858. Its totient is φ = 363384.

The previous prime is 726751. The next prime is 726779. The reversal of 726772 is 277627.

It can be written as a sum of positive squares in only one way, i.e., 571536 + 155236 = 756^2 + 394^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726779) 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 as a sum of consecutive naturals, namely, 90843 + ... + 90850.

2⁷²⁶⁷⁷² is an apocalyptic number.

It is an amenable number.

726772 is a deficient number, since it is larger than the sum of its proper divisors (545086).

726772 is a wasteful number, since it uses less digits than its factorization.

726772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181697 (or 181695 counting only the distinct ones).

The product of its digits is 8232, while the sum is 31.

The square root of 726772 is about 852.5092374866. The cubic root of 726772 is about 89.9082191922.

The spelling of 726772 in words is "seven hundred twenty-six thousand, seven hundred seventy-two".