5623644866 has 32 divisors (see below), whose sum is σ = 9825416832. Its totient is φ = 2364215040.

The previous prime is 5623644853. The next prime is 5623644919. The reversal of 5623644866 is 6684463265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213620 + ... + 238496.

It is an arithmetic number, because the mean of its divisors is an integer number (307044276).

Almost surely, 2^5623644866 is an apocalyptic number.

5623644866 is a deficient number, since it is larger than the sum of its proper divisors (4201771966).

5623644866 is a wasteful number, since it uses less digits than its factorization.

5623644866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25194.

The product of its digits is 4976640, while the sum is 50.

The square root of 5623644866 is about 74990.9652291528. The cubic root of 5623644866 is about 1778.3038239732.

The spelling of 5623644866 in words is "five billion, six hundred twenty-three million, six hundred forty-four thousand, eight hundred sixty-six".