6563560640 has 224 divisors, whose sum is σ = 20250424320. Its totient is φ = 1967763456.

The previous prime is 6563560637. The next prime is 6563560643. The reversal of 6563560640 is 460653656.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6563560637) and next prime (6563560643).

It is a tau number, because it is divible by the number of its divisors (224).

It is not an unprimeable number, because it can be changed into a prime (6563560643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547349 + ... + 559211.

It is an arithmetic number, because the mean of its divisors is an integer number (90403680).

Almost surely, 2^6563560640 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 6563560640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10125212160).

6563560640 is an abundant number, since it is smaller than the sum of its proper divisors (13686863680).

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

6563560640 is a wasteful number, since it uses less digits than its factorization.

6563560640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11919 (or 11909 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 6563560640 is about 81015.8048778138. The cubic root of 6563560640 is about 1872.3189548329.

The spelling of 6563560640 in words is "six billion, five hundred sixty-three million, five hundred sixty thousand, six hundred forty".