726610 has 8 divisors (see below), whose sum is σ = 1307916. Its totient is φ = 290640.

The previous prime is 726601. The next prime is 726611. The reversal of 726610 is 16627.

It can be written as a sum of positive squares in 2 ways, for example, as 638401 + 88209 = 799^2 + 297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (726611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36321 + ... + 36340.

2⁷²⁶⁶¹⁰ is an apocalyptic number.

726610 is a deficient number, since it is larger than the sum of its proper divisors (581306).

726610 is a wasteful number, since it uses less digits than its factorization.

726610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72668.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 726610 is about 852.4142185581. The cubic root of 726610 is about 89.9015384111.

The spelling of 726610 in words is "seven hundred twenty-six thousand, six hundred ten".