726808 has 16 divisors (see below), whose sum is σ = 1392480. Its totient is φ = 355488.

The previous prime is 726797. The next prime is 726809. The reversal of 726808 is 808627.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 726808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726809) by changing a digit.

726808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591 + ... + 1342.

It is an arithmetic number, because the mean of its divisors is an integer number (87030).

2⁷²⁶⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

726808 is a deficient number, since it is larger than the sum of its proper divisors (665672).

726808 is a wasteful number, since it uses less digits than its factorization.

726808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986 (or 1982 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 726808 is about 852.5303513659. The cubic root of 726808 is about 89.9097036754.

The spelling of 726808 in words is "seven hundred twenty-six thousand, eight hundred eight".