503863 has 8 divisors (see below), whose sum is σ = 540432. Its totient is φ = 468096.

The previous prime is 503857. The next prime is 503869. The reversal of 503863 is 368305.

It is an interprime number because it is at equal distance from previous prime (503857) and next prime (503869).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 503863 - 2⁹ = 503351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1681 + ... + 1957.

It is an arithmetic number, because the mean of its divisors is an integer number (67554).

2⁵⁰³⁸⁶³ is an apocalyptic number.

503863 is a deficient number, since it is larger than the sum of its proper divisors (36569).

503863 is a wasteful number, since it uses less digits than its factorization.

503863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 503863 is about 709.8330789700. The cubic root of 503863 is about 79.5739327791.

The spelling of 503863 in words is "five hundred three thousand, eight hundred sixty-three".