503866660 has 48 divisors (see below), whose sum is σ = 1162687680. Its totient is φ = 181895040.

The previous prime is 503866651. The next prime is 503866663. The reversal of 503866660 is 66668305.

It is a super-2 number, since 2×503866660² = 507763222119111200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (503866663) 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 15 ways as a sum of consecutive naturals, for example, 22342 + ... + 38818.

It is an arithmetic number, because the mean of its divisors is an integer number (24222660).

Almost surely, 2^503866660 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 503866660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581343840).

503866660 is an abundant number, since it is smaller than the sum of its proper divisors (658821020).

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

503866660 is a wasteful number, since it uses less digits than its factorization.

503866660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16636 (or 16634 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 503866660 is about 22446.9744063649. The cubic root of 503866660 is about 795.7412545046.

The spelling of 503866660 in words is "five hundred three million, eight hundred sixty-six thousand, six hundred sixty".