8505803660 has 12 divisors (see below), whose sum is σ = 17862187728. Its totient is φ = 3402321456.

The previous prime is 8505803651. The next prime is 8505803693. The reversal of 8505803660 is 663085058.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212645072 + ... + 212645111.

It is an arithmetic number, because the mean of its divisors is an integer number (1488515644).

Almost surely, 2^8505803660 is an apocalyptic number.

It is an amenable number.

8505803660 is an abundant number, since it is smaller than the sum of its proper divisors (9356384068).

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

8505803660 is a wasteful number, since it uses less digits than its factorization.

8505803660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425290192 (or 425290190 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 8505803660 is about 92226.9139676700. The cubic root of 8505803660 is about 2041.2919264315.

The spelling of 8505803660 in words is "eight billion, five hundred five million, eight hundred three thousand, six hundred sixty".