503966 has 4 divisors (see below), whose sum is σ = 755952. Its totient is φ = 251982.

The previous prime is 503963. The next prime is 503969. The reversal of 503966 is 669305.

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

It is an interprime number because it is at equal distance from previous prime (503963) and next prime (503969).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503963) 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 as a sum of consecutive naturals, namely, 125990 + ... + 125993.

It is an arithmetic number, because the mean of its divisors is an integer number (188988).

2⁵⁰³⁹⁶⁶ is an apocalyptic number.

503966 is a deficient number, since it is larger than the sum of its proper divisors (251986).

503966 is a wasteful number, since it uses less digits than its factorization.

503966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251985.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 503966 is about 709.9056275309. The cubic root of 503966 is about 79.5793545946.

The spelling of 503966 in words is "five hundred three thousand, nine hundred sixty-six".