726650 has 12 divisors (see below), whose sum is σ = 1351662. Its totient is φ = 290640.

The previous prime is 726647. The next prime is 726659. The reversal of 726650 is 56627.

It can be written as a sum of positive squares in 3 ways, for example, as 561001 + 165649 = 749^2 + 407^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726650.

It is not an unprimeable number, because it can be changed into a prime (726659) 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 5 ways as a sum of consecutive naturals, for example, 7217 + ... + 7316.

2⁷²⁶⁶⁵⁰ is an apocalyptic number.

726650 is a deficient number, since it is larger than the sum of its proper divisors (625012).

726650 is a wasteful number, since it uses less digits than its factorization.

726650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14545 (or 14540 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 726650 is about 852.4376810067. The cubic root of 726650 is about 89.9031880790.

The spelling of 726650 in words is "seven hundred twenty-six thousand, six hundred fifty".