540605 has 8 divisors (see below), whose sum is σ = 698712. Its totient is φ = 399168.

The previous prime is 540599. The next prime is 540611. The reversal of 540605 is 506045.

It is an interprime number because it is at equal distance from previous prime (540599) and next prime (540611).

It can be written as a sum of positive squares in 4 ways, for example, as 103684 + 436921 = 322^2 + 661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 540605 - 2⁶ = 540541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4094 + ... + 4223.

It is an arithmetic number, because the mean of its divisors is an integer number (87339).

2⁵⁴⁰⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

540605 is a deficient number, since it is larger than the sum of its proper divisors (158107).

540605 is a wasteful number, since it uses less digits than its factorization.

540605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8335.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 540605 is about 735.2584579588. The cubic root of 540605 is about 81.4629286782.

The spelling of 540605 in words is "five hundred forty thousand, six hundred five".