5664627617666 has 8 divisors (see below), whose sum is σ = 8496994157964. Its totient is φ = 2832296231680.

The previous prime is 5664627617639. The next prime is 5664627617669. The reversal of 5664627617666 is 6667167264665.

It can be written as a sum of positive squares in 2 ways, for example, as 3299414312041 + 2365213305625 = 1816429^2 + 1537925^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 5664627617596 and 5664627617605.

It is not an unprimeable number, because it can be changed into a prime (5664627617669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8381975 + ... + 9032538.

Almost surely, 2^{5664627617666} is an apocalyptic number.

5664627617666 is a deficient number, since it is larger than the sum of its proper divisors (2832366540298).

5664627617666 is a wasteful number, since it uses less digits than its factorization.

5664627617666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17577156.

The product of its digits is 548674560, while the sum is 68.

The spelling of 5664627617666 in words is "five trillion, six hundred sixty-four billion, six hundred twenty-seven million, six hundred seventeen thousand, six hundred sixty-six".