6564253236 has 36 divisors (see below), whose sum is σ = 15681127392. Its totient is φ = 2137191504.

The previous prime is 6564253229. The next prime is 6564253237. The reversal of 6564253236 is 6323524656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564253237) 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, 125736 + ... + 170111.

It is an arithmetic number, because the mean of its divisors is an integer number (435586872).

Almost surely, 2^6564253236 is an apocalyptic number.

It is an amenable number.

6564253236 is an abundant number, since it is smaller than the sum of its proper divisors (9116874156).

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

6564253236 is a wasteful number, since it uses less digits than its factorization.

6564253236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295940 (or 295895 counting only the distinct ones).

The product of its digits is 777600, while the sum is 42.

The square root of 6564253236 is about 81020.0792149699. The cubic root of 6564253236 is about 1872.3848090788.

The spelling of 6564253236 in words is "six billion, five hundred sixty-four million, two hundred fifty-three thousand, two hundred thirty-six".