673545 has 16 divisors (see below), whose sum is σ = 1092672. Its totient is φ = 354240.

The previous prime is 673529. The next prime is 673549. The reversal of 673545 is 545376.

It is not a de Polignac number, because 673545 - 2⁴ = 673529 is a prime.

It is a Curzon number.

673545 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (673549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (68292).

2⁶⁷³⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

673545 is a deficient number, since it is larger than the sum of its proper divisors (419127).

673545 is a wasteful number, since it uses less digits than its factorization.

673545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

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

The square root of 673545 is about 820.6978737635. The cubic root of 673545 is about 87.6574579779.

The spelling of 673545 in words is "six hundred seventy-three thousand, five hundred forty-five".