6564266240 has 288 divisors, whose sum is σ = 19136549376. Its totient is φ = 2108620800.

The previous prime is 6564266231. The next prime is 6564266251. The reversal of 6564266240 is 426624656.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10921940 + ... + 10922540.

It is an arithmetic number, because the mean of its divisors is an integer number (66446352).

Almost surely, 2^6564266240 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 6564266240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9568274688).

6564266240 is an abundant number, since it is smaller than the sum of its proper divisors (12572283136).

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

6564266240 is a wasteful number, since it uses less digits than its factorization.

6564266240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The square root of 6564266240 is about 81020.1594666414. The cubic root of 6564266240 is about 1872.3860454965.

The spelling of 6564266240 in words is "six billion, five hundred sixty-four million, two hundred sixty-six thousand, two hundred forty".