545683 has 4 divisors (see below), whose sum is σ = 577800. Its totient is φ = 513568.

The previous prime is 545663. The next prime is 545711. The reversal of 545683 is 386545.

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

It is a cyclic number.

It is not a de Polignac number, because 545683 - 2⁵ = 545651 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545663) 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, 16033 + ... + 16066.

It is an arithmetic number, because the mean of its divisors is an integer number (144450).

2⁵⁴⁵⁶⁸³ is an apocalyptic number.

545683 is a deficient number, since it is larger than the sum of its proper divisors (32117).

545683 is a wasteful number, since it uses less digits than its factorization.

545683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32116.

The product of its digits is 14400, while the sum is 31.

The square root of 545683 is about 738.7035941431. The cubic root of 545683 is about 81.7171995088.

The spelling of 545683 in words is "five hundred forty-five thousand, six hundred eighty-three".