726668 has 6 divisors (see below), whose sum is σ = 1271676. Its totient is φ = 363332.

The previous prime is 726659. The next prime is 726679. The reversal of 726668 is 866627.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90830 + ... + 90837.

It is an arithmetic number, because the mean of its divisors is an integer number (211946).

2⁷²⁶⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

726668 is a deficient number, since it is larger than the sum of its proper divisors (545008).

726668 is a wasteful number, since it uses less digits than its factorization.

726668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181671 (or 181669 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 726668 is about 852.4482388978. The cubic root of 726668 is about 89.9039304098.

The spelling of 726668 in words is "seven hundred twenty-six thousand, six hundred sixty-eight".