726684 has 48 divisors (see below), whose sum is σ = 1994496. Its totient is φ = 201600.

The previous prime is 726679. The next prime is 726689. The reversal of 726684 is 486627.

726684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (726679) and next prime (726689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726689) 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, 3339 + ... + 3549.

It is an arithmetic number, because the mean of its divisors is an integer number (41552).

2⁷²⁶⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997248).

726684 is an abundant number, since it is smaller than the sum of its proper divisors (1267812).

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

726684 is a wasteful number, since it uses less digits than its factorization.

726684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 264 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 726684 is about 852.4576235802. The cubic root of 726684 is about 89.9045902491.

The spelling of 726684 in words is "seven hundred twenty-six thousand, six hundred eighty-four".