726608 has 10 divisors (see below), whose sum is σ = 1407834. Its totient is φ = 363296.

The previous prime is 726601. The next prime is 726611. The reversal of 726608 is 806627.

It can be written as a sum of positive squares in only one way, i.e., 399424 + 327184 = 632^2 + 572^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726608.

It is not an unprimeable number, because it can be changed into a prime (726601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22691 + ... + 22722.

2⁷²⁶⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

726608 is a deficient number, since it is larger than the sum of its proper divisors (681226).

726608 is a wasteful number, since it uses less digits than its factorization.

726608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45421 (or 45415 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 726608 is about 852.4130454187. The cubic root of 726608 is about 89.9014559261.

The spelling of 726608 in words is "seven hundred twenty-six thousand, six hundred eight".