503705 has 4 divisors (see below), whose sum is σ = 604452. Its totient is φ = 402960.

The previous prime is 503663. The next prime is 503707. The reversal of 503705 is 507305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203401 + 300304 = 451^2 + 548^2 .

It is not a de Polignac number, because 503705 - 2¹⁶ = 438169 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 503705.

It is not an unprimeable number, because it can be changed into a prime (503707) 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 3 ways as a sum of consecutive naturals, for example, 50366 + ... + 50375.

It is an arithmetic number, because the mean of its divisors is an integer number (151113).

2⁵⁰³⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

503705 is a deficient number, since it is larger than the sum of its proper divisors (100747).

503705 is a wasteful number, since it uses less digits than its factorization.

503705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100746.

The product of its (nonzero) digits is 525, while the sum is 20.

The square root of 503705 is about 709.7217764730. The cubic root of 503705 is about 79.5656143832.

Subtracting 503705 from its reverse (507305), we obtain a square (3600 = 60²).

The spelling of 503705 in words is "five hundred three thousand, seven hundred five".