8706564 has 36 divisors (see below), whose sum is σ = 22316476. Its totient is φ = 2861568.

The previous prime is 8706557. The next prime is 8706569. The reversal of 8706564 is 4656078.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6718464 + 1988100 = 2592^2 + 1410^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (8706569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972 + ... + 4284.

Almost surely, 2^8706564 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 8706564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11158238).

8706564 is an abundant number, since it is smaller than the sum of its proper divisors (13609912).

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

8706564 is a wasteful number, since it uses less digits than its factorization.

8706564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 8706564 is about 2950.6887331604. The cubic root of 8706564 is about 205.7227236949.

The spelling of 8706564 in words is "eight million, seven hundred six thousand, five hundred sixty-four".