503305066 has 24 divisors (see below), whose sum is σ = 845508132. Its totient is φ = 224452800.

The previous prime is 503305039. The next prime is 503305073. The reversal of 503305066 is 660503305.

It can be written as a sum of positive squares in 2 ways, for example, as 503060041 + 245025 = 22429^2 + 495^2 .

It is a super-2 number, since 2×503305066² = 506631978922528712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6795 + ... + 32446.

Almost surely, 2^503305066 is an apocalyptic number.

503305066 is a deficient number, since it is larger than the sum of its proper divisors (342203066).

503305066 is a wasteful number, since it uses less digits than its factorization.

503305066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39318 (or 39307 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 503305066 is about 22434.4615714307. The cubic root of 503305066 is about 795.4455085068.

The spelling of 503305066 in words is "five hundred three million, three hundred five thousand, sixty-six".