6564626552 has 48 divisors (see below), whose sum is σ = 13546097880. Its totient is φ = 2980232640.

The previous prime is 6564626533. The next prime is 6564626573. The reversal of 6564626552 is 2556264656.

It is a junction number, because it is equal to n+sod(n) for n = 6564626497 and 6564626506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 874238 + ... + 881714.

Almost surely, 2^6564626552 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 6564626552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6773048940).

6564626552 is an abundant number, since it is smaller than the sum of its proper divisors (6981471328).

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

6564626552 is a wasteful number, since it uses less digits than its factorization.

6564626552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8412 (or 8397 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 47.

The square root of 6564626552 is about 81022.3830308638. The cubic root of 6564626552 is about 1872.4203032385.

The spelling of 6564626552 in words is "six billion, five hundred sixty-four million, six hundred twenty-six thousand, five hundred fifty-two".