8705712 has 40 divisors (see below), whose sum is σ = 22833856. Its totient is φ = 2857536.

The previous prime is 8705689. The next prime is 8705729. The reversal of 8705712 is 2175078.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8705712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863 + ... + 4569.

Almost surely, 2^8705712 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 8705712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11416928).

8705712 is an abundant number, since it is smaller than the sum of its proper divisors (14128144).

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

8705712 is a wasteful number, since it uses less digits than its factorization.

8705712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785 (or 2779 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 8705712 is about 2950.5443565552. The cubic root of 8705712 is about 205.7160129926.

The spelling of 8705712 in words is "eight million, seven hundred five thousand, seven hundred twelve".