6564755189 has 4 divisors (see below), whose sum is σ = 6910268640. Its totient is φ = 6219241740.

The previous prime is 6564755167. The next prime is 6564755191. The reversal of 6564755189 is 9815574656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6564755189 - 2²⁴ = 6547977973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564755689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172756697 + ... + 172756734.

It is an arithmetic number, because the mean of its divisors is an integer number (1727567160).

Almost surely, 2^6564755189 is an apocalyptic number.

It is an amenable number.

6564755189 is a deficient number, since it is larger than the sum of its proper divisors (345513451).

6564755189 is a wasteful number, since it uses less digits than its factorization.

6564755189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345513450.

The product of its digits is 9072000, while the sum is 56.

The square root of 6564755189 is about 81023.1768631668. The cubic root of 6564755189 is about 1872.4325334827.

The spelling of 6564755189 in words is "six billion, five hundred sixty-four million, seven hundred fifty-five thousand, one hundred eighty-nine".