8136564 has 12 divisors (see below), whose sum is σ = 18985344. Its totient is φ = 2712184.

The previous prime is 8136563. The next prime is 8136571. The reversal of 8136564 is 4656318.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8136563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339012 + ... + 339035.

It is an arithmetic number, because the mean of its divisors is an integer number (1582112).

Almost surely, 2^8136564 is an apocalyptic number.

It is an amenable number.

8136564 is an abundant number, since it is smaller than the sum of its proper divisors (10848780).

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

8136564 is a wasteful number, since it uses less digits than its factorization.

8136564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678054 (or 678052 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 8136564 is about 2852.4663012909. The cubic root of 8136564 is about 201.1316184558.

The spelling of 8136564 in words is "eight million, one hundred thirty-six thousand, five hundred sixty-four".