540663 has 4 divisors (see below), whose sum is σ = 720888. Its totient is φ = 360440.

The previous prime is 540629. The next prime is 540677. The reversal of 540663 is 366045.

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 540663 - 2⁶ = 540599 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 540663.

It is not an unprimeable number, because it can be changed into a prime (540613) 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, 90108 + ... + 90113.

It is an arithmetic number, because the mean of its divisors is an integer number (180222).

2⁵⁴⁰⁶⁶³ is an apocalyptic number.

540663 is a deficient number, since it is larger than the sum of its proper divisors (180225).

540663 is a wasteful number, since it uses less digits than its factorization.

540663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180224.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 540663 is about 735.2978988138. The cubic root of 540663 is about 81.4658418840.

The spelling of 540663 in words is "five hundred forty thousand, six hundred sixty-three".