6564274164 has 72 divisors (see below), whose sum is σ = 19020991808. Its totient is φ = 1869816960.

The previous prime is 6564274159. The next prime is 6564274169. The reversal of 6564274164 is 4614724656.

6564274164 is a `hidden beast` number, since 6 + 564 + 2 + 74 + 16 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (6564274159) and next prime (6564274169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564274169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44064 + ... + 122760.

Almost surely, 2^6564274164 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 6564274164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9510495904).

6564274164 is an abundant number, since it is smaller than the sum of its proper divisors (12456717644).

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

6564274164 is a wasteful number, since it uses less digits than its factorization.

6564274164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79045 (or 79040 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 6564274164 is about 81020.2083680362. The cubic root of 6564274164 is about 1872.3867989080.

The spelling of 6564274164 in words is "six billion, five hundred sixty-four million, two hundred seventy-four thousand, one hundred sixty-four".