506990 has 24 divisors (see below), whose sum is σ = 1005480. Its totient is φ = 183920.

The previous prime is 506983. The next prime is 506993. The reversal of 506990 is 99605.

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 506990.

It is not an unprimeable number, because it can be changed into a prime (506993) by changing a digit.

506990 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 11 ways as a sum of consecutive naturals, for example, 1001 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (41895).

2⁵⁰⁶⁹⁹⁰ is an apocalyptic number.

506990 is a deficient number, since it is larger than the sum of its proper divisors (498490).

506990 is a wasteful number, since it uses less digits than its factorization.

506990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 506990 is about 712.0323026380. The cubic root of 506990 is about 79.7382067381.

The spelling of 506990 in words is "five hundred six thousand, nine hundred ninety".