8223561966 has 16 divisors (see below), whose sum is σ = 16476344064. Its totient is φ = 2736317304.

The previous prime is 8223561949. The next prime is 8223562019. The reversal of 8223561966 is 6691653228.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213846 + ... + 1220601.

It is an arithmetic number, because the mean of its divisors is an integer number (1029771504).

Almost surely, 2^8223561966 is an apocalyptic number.

8223561966 is an abundant number, since it is smaller than the sum of its proper divisors (8252782098).

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

8223561966 is a wasteful number, since it uses less digits than its factorization.

8223561966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435015.

The product of its digits is 933120, while the sum is 48.

The square root of 8223561966 is about 90683.8572514425. The cubic root of 8223561966 is about 2018.4592673990.

The spelling of 8223561966 in words is "eight billion, two hundred twenty-three million, five hundred sixty-one thousand, nine hundred sixty-six".