540680 has 32 divisors (see below), whose sum is σ = 1391040. Its totient is φ = 185280.

The previous prime is 540679. The next prime is 540689. The reversal of 540680 is 86045.

540680 = T₁₃₉ + T₁₄₀ + ... + T₁₈₀.

540680 = 6² + 7² + ... + 117².

It is not an unprimeable number, because it can be changed into a prime (540689) 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 7 ways as a sum of consecutive naturals, for example, 686 + ... + 1245.

It is an arithmetic number, because the mean of its divisors is an integer number (43470).

2⁵⁴⁰⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

540680 is an abundant number, since it is smaller than the sum of its proper divisors (850360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540680 is a wasteful number, since it uses less digits than its factorization.

540680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 540680 is about 735.3094586635. The cubic root of 540680 is about 81.4666957152.

The spelling of 540680 in words is "five hundred forty thousand, six hundred eighty".