503565864 has 64 divisors (see below), whose sum is σ = 1323302400. Its totient is φ = 159377856.

The previous prime is 503565863. The next prime is 503565877. The reversal of 503565864 is 468565305.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (503565863) 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 15 ways as a sum of consecutive naturals, for example, 73447 + ... + 80009.

It is an arithmetic number, because the mean of its divisors is an integer number (20676600).

Almost surely, 2^503565864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503565864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661651200).

503565864 is an abundant number, since it is smaller than the sum of its proper divisors (819736536).

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

503565864 is a wasteful number, since it uses less digits than its factorization.

503565864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734 (or 6730 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 503565864 is about 22440.2732603683. The cubic root of 503565864 is about 795.5828770005.

The spelling of 503565864 in words is "five hundred three million, five hundred sixty-five thousand, eight hundred sixty-four".