730723 has 8 divisors (see below), whose sum is σ = 842240. Its totient is φ = 621000.

The previous prime is 730679. The next prime is 730727. The reversal of 730723 is 327037.

730723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730723 is a prime.

It is a super-2 number, since 2×730723² = 1067912205458, which contains 22 as substring.

730723 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 730694 and 730703.

It is not an unprimeable number, because it can be changed into a prime (730727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598 + ... + 1348.

It is an arithmetic number, because the mean of its divisors is an integer number (105280).

2⁷³⁰⁷²³ is an apocalyptic number.

730723 is a deficient number, since it is larger than the sum of its proper divisors (111517).

730723 is a wasteful number, since it uses less digits than its factorization.

730723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897.

The product of its (nonzero) digits is 882, while the sum is 22.

The square root of 730723 is about 854.8233735691. The cubic root of 730723 is about 90.0708495612.

The spelling of 730723 in words is "seven hundred thirty thousand, seven hundred twenty-three".