545673 has 4 divisors (see below), whose sum is σ = 727568. Its totient is φ = 363780.

The previous prime is 545663. The next prime is 545711. The reversal of 545673 is 376545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 545673 - 2⁵ = 545641 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545673.

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, 90943 + ... + 90948.

It is an arithmetic number, because the mean of its divisors is an integer number (181892).

2⁵⁴⁵⁶⁷³ is an apocalyptic number.

It is an amenable number.

545673 is a deficient number, since it is larger than the sum of its proper divisors (181895).

545673 is a wasteful number, since it uses less digits than its factorization.

545673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181894.

The product of its digits is 12600, while the sum is 30.

The square root of 545673 is about 738.6968254974. The cubic root of 545673 is about 81.7167003320.

The spelling of 545673 in words is "five hundred forty-five thousand, six hundred seventy-three".