726730 has 8 divisors (see below), whose sum is σ = 1308132. Its totient is φ = 290688.

The previous prime is 726707. The next prime is 726751. The reversal of 726730 is 37627.

726730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 720801 + 5929 = 849^2 + 77^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 726695 and 726704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36327 + ... + 36346.

2⁷²⁶⁷³⁰ is an apocalyptic number.

726730 is a deficient number, since it is larger than the sum of its proper divisors (581402).

726730 is a wasteful number, since it uses less digits than its factorization.

726730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72680.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 726730 is about 852.4846039665. The cubic root of 726730 is about 89.9064872332.

The spelling of 726730 in words is "seven hundred twenty-six thousand, seven hundred thirty".