540673 has 4 divisors (see below), whose sum is σ = 617920. Its totient is φ = 463428.

The previous prime is 540629. The next prime is 540677. The reversal of 540673 is 376045.

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, and also an emirpimes, since its reverse is a distinct semiprime: 376045 = 5 ⋅75209.

It is a de Polignac number, because none of the positive numbers 2^k-540673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38613 + ... + 38626.

It is an arithmetic number, because the mean of its divisors is an integer number (154480).

It is a Proth number, since it is equal to 33 ⋅ 2¹⁴ + 1 and 33 < 2¹⁴.

2⁵⁴⁰⁶⁷³ is an apocalyptic number.

It is an amenable number.

540673 is a deficient number, since it is larger than the sum of its proper divisors (77247).

540673 is an equidigital number, since it uses as much as digits as its factorization.

540673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77246.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 540673 is about 735.3046987474. The cubic root of 540673 is about 81.4663441399.

The spelling of 540673 in words is "five hundred forty thousand, six hundred seventy-three".