506490 has 16 divisors (see below), whose sum is σ = 1215648. Its totient is φ = 135056.

The previous prime is 506479. The next prime is 506491. The reversal of 506490 is 94605.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 506490.

It is not an unprimeable number, because it can be changed into a prime (506491) by changing a digit.

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, 8412 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (75978).

2⁵⁰⁶⁴⁹⁰ is an apocalyptic number.

506490 is an abundant number, since it is smaller than the sum of its proper divisors (709158).

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

506490 is a wasteful number, since it uses less digits than its factorization.

506490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16893.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 506490 is about 711.6811083624. The cubic root of 506490 is about 79.7119851709.

The spelling of 506490 in words is "five hundred six thousand, four hundred ninety".