8505812 has 18 divisors (see below), whose sum is σ = 17315802. Its totient is φ = 3645264.

The previous prime is 8505799. The next prime is 8505817. The reversal of 8505812 is 2185058.

It can be written as a sum of positive squares in only one way, i.e., 8317456 + 188356 = 2884^2 + 434^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21503 + ... + 21894.

It is an arithmetic number, because the mean of its divisors is an integer number (961989).

Almost surely, 2^8505812 is an apocalyptic number.

It is an amenable number.

8505812 is an abundant number, since it is smaller than the sum of its proper divisors (8809990).

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

8505812 is a wasteful number, since it uses less digits than its factorization.

8505812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43415 (or 43406 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 8505812 is about 2916.4725268721. The cubic root of 8505812 is about 204.1292593598.

The spelling of 8505812 in words is "eight million, five hundred five thousand, eight hundred twelve".