6564903408 has 180 divisors, whose sum is σ = 22161782448. Its totient is φ = 1776867840.

The previous prime is 6564903407. The next prime is 6564903437. The reversal of 6564903408 is 8043094656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564903407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 354868 + ... + 372908.

Almost surely, 2^6564903408 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 6564903408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11080891224).

6564903408 is an abundant number, since it is smaller than the sum of its proper divisors (15596879040).

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

6564903408 is a wasteful number, since it uses less digits than its factorization.

6564903408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18100 (or 18072 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6564903408 is about 81024.0915283843. The cubic root of 6564903408 is about 1872.4466252998.

The spelling of 6564903408 in words is "six billion, five hundred sixty-four million, nine hundred three thousand, four hundred eight".