6564386530 has 64 divisors (see below), whose sum is σ = 13360515840. Its totient is φ = 2303997696.

The previous prime is 6564386527. The next prime is 6564386531. The reversal of 6564386530 is 356834656.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (6564386531) 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, 480636 + ... + 494104.

It is an arithmetic number, because the mean of its divisors is an integer number (208758060).

Almost surely, 2^6564386530 is an apocalyptic number.

6564386530 is an abundant number, since it is smaller than the sum of its proper divisors (6796129310).

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

6564386530 is a wasteful number, since it uses less digits than its factorization.

6564386530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13675.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The square root of 6564386530 is about 81020.9018093479. The cubic root of 6564386530 is about 1872.3974825677.

The spelling of 6564386530 in words is "six billion, five hundred sixty-four million, three hundred eighty-six thousand, five hundred thirty".