726786 has 32 divisors (see below), whose sum is σ = 1657920. Its totient is φ = 235872.

The previous prime is 726779. The next prime is 726787. The reversal of 726786 is 687627.

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 726786.

It is not an unprimeable number, because it can be changed into a prime (726787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166 + ... + 2478.

It is an arithmetic number, because the mean of its divisors is an integer number (51810).

2⁷²⁶⁷⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (828960).

726786 is an abundant number, since it is smaller than the sum of its proper divisors (931134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

726786 is a wasteful number, since it uses less digits than its factorization.

726786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 361 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 726786 is about 852.5174485018. The cubic root of 726786 is about 89.9087964970.

The spelling of 726786 in words is "seven hundred twenty-six thousand, seven hundred eighty-six".