540990 has 24 divisors (see below), whose sum is σ = 1406808. Its totient is φ = 144240.

The previous prime is 540989. The next prime is 541001. The reversal of 540990 is 99045.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2916 + ... + 3095.

It is an arithmetic number, because the mean of its divisors is an integer number (58617).

2⁵⁴⁰⁹⁹⁰ is an apocalyptic number.

540990 is an abundant number, since it is smaller than the sum of its proper divisors (865818).

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

540990 is a wasteful number, since it uses less digits than its factorization.

540990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6024 (or 6021 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 540990 is about 735.5202240591. The cubic root of 540990 is about 81.4822624402.

The spelling of 540990 in words is "five hundred forty thousand, nine hundred ninety".