5664405186 has 72 divisors (see below), whose sum is σ = 13509126540. Its totient is φ = 1714056960.

The previous prime is 5664405169. The next prime is 5664405199. The reversal of 5664405186 is 6815044665.

5664405186 is a `hidden beast` number, since 5 + 6 + 64 + 405 + 186 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5304354561 + 360050625 = 72831^2 + 18975^2 .

It is a super-2 number, since 2×5664405186² = 64170972222367389192, which contains 22 as substring.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 2074270 + ... + 2076998.

Almost surely, 2^5664405186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5664405186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6754563270).

5664405186 is an abundant number, since it is smaller than the sum of its proper divisors (7844721354).

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

5664405186 is a wasteful number, since it uses less digits than its factorization.

5664405186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712 (or 3698 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 5664405186 is about 75262.2427648818. The cubic root of 5664405186 is about 1782.5898824460.

The spelling of 5664405186 in words is "five billion, six hundred sixty-four million, four hundred five thousand, one hundred eighty-six".