503646 has 32 divisors (see below), whose sum is σ = 1185408. Its totient is φ = 140640.

The previous prime is 503623. The next prime is 503647. The reversal of 503646 is 646305.

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 503646.

It is not an unprimeable number, because it can be changed into a prime (503647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565 + ... + 1151.

It is an arithmetic number, because the mean of its divisors is an integer number (37044).

2⁵⁰³⁶⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592704).

503646 is an abundant number, since it is smaller than the sum of its proper divisors (681762).

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

503646 is a wasteful number, since it uses less digits than its factorization.

503646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

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

The square root of 503646 is about 709.6802096719. The cubic root of 503646 is about 79.5625077007.

The spelling of 503646 in words is "five hundred three thousand, six hundred forty-six".