8564656089 has 16 divisors (see below), whose sum is σ = 12633145344. Its totient is φ = 5117590800.

The previous prime is 8564656081. The next prime is 8564656097. The reversal of 8564656089 is 9806564658.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8564656081) and next prime (8564656097).

It is not a de Polignac number, because 8564656089 - 2³ = 8564656081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8564656081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1825369 + ... + 1830054.

It is an arithmetic number, because the mean of its divisors is an integer number (789571584).

Almost surely, 2^8564656089 is an apocalyptic number.

It is an amenable number.

8564656089 is a deficient number, since it is larger than the sum of its proper divisors (4068489255).

8564656089 is a wasteful number, since it uses less digits than its factorization.

8564656089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655508.

The product of its (nonzero) digits is 12441600, while the sum is 57.

The square root of 8564656089 is about 92545.4271641771. The cubic root of 8564656089 is about 2045.9890711953.

The spelling of 8564656089 in words is "eight billion, five hundred sixty-four million, six hundred fifty-six thousand, eighty-nine".