6564622464 has 96 divisors (see below), whose sum is σ = 19711785600. Its totient is φ = 2093059584.

The previous prime is 6564622459. The next prime is 6564622483. The reversal of 6564622464 is 4642264656.

6564622464 is a `hidden beast` number, since 6 + 564 + 6 + 2 + 24 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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, 97384 + ... + 150375.

It is an arithmetic number, because the mean of its divisors is an integer number (205331100).

Almost surely, 2^6564622464 is an apocalyptic number.

6564622464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6564622464 is an abundant number, since it is smaller than the sum of its proper divisors (13147163136).

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

6564622464 is a wasteful number, since it uses less digits than its factorization.

6564622464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247802 (or 247787 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 45.

The square root of 6564622464 is about 81022.3578032632. The cubic root of 6564622464 is about 1872.4199145667.

The spelling of 6564622464 in words is "six billion, five hundred sixty-four million, six hundred twenty-two thousand, four hundred sixty-four".