5666817644 has 6 divisors (see below), whose sum is σ = 9916930884. Its totient is φ = 2833408820.

The previous prime is 5666817631. The next prime is 5666817649. The reversal of 5666817644 is 4467186665.

It is a super-2 number, since 2×5666817644² = 64225644420699421472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5666817649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 708352202 + ... + 708352209.

It is an arithmetic number, because the mean of its divisors is an integer number (1652821814).

Almost surely, 2^5666817644 is an apocalyptic number.

It is an amenable number.

5666817644 is a deficient number, since it is larger than the sum of its proper divisors (4250113240).

5666817644 is a wasteful number, since it uses less digits than its factorization.

5666817644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416704415 (or 1416704413 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 53.

The square root of 5666817644 is about 75278.2680725321. The cubic root of 5666817644 is about 1782.8429135948.

The spelling of 5666817644 in words is "five billion, six hundred sixty-six million, eight hundred seventeen thousand, six hundred forty-four".