730543 has 4 divisors (see below), whose sum is σ = 796968. Its totient is φ = 664120.

The previous prime is 730537. The next prime is 730553. The reversal of 730543 is 345037.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730543 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33196 + ... + 33217.

It is an arithmetic number, because the mean of its divisors is an integer number (199242).

2⁷³⁰⁵⁴³ is an apocalyptic number.

730543 is a deficient number, since it is larger than the sum of its proper divisors (66425).

730543 is a wasteful number, since it uses less digits than its factorization.

730543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66424.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 730543 is about 854.7180821768. The cubic root of 730543 is about 90.0634531951.

The spelling of 730543 in words is "seven hundred thirty thousand, five hundred forty-three".