8631223146 has 96 divisors (see below), whose sum is σ = 23057169408. Its totient is φ = 2272354560.

The previous prime is 8631223141. The next prime is 8631223147. The reversal of 8631223146 is 6413221368.

8631223146 is a `hidden beast` number, since 8 + 631 + 2 + 2 + 3 + 14 + 6 = 666.

It is a super-2 number, since 2×8631223146² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8631223146.

It is not an unprimeable number, because it can be changed into a prime (8631223141) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 989926 + ... + 998606.

It is an arithmetic number, because the mean of its divisors is an integer number (240178848).

Almost surely, 2^8631223146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8631223146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11528584704).

8631223146 is an abundant number, since it is smaller than the sum of its proper divisors (14425946262).

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

8631223146 is a wasteful number, since it uses less digits than its factorization.

8631223146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316 (or 9313 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 8631223146 is about 92904.3763554764. The cubic root of 8631223146 is about 2051.2760761011.

The spelling of 8631223146 in words is "eight billion, six hundred thirty-one million, two hundred twenty-three thousand, one hundred forty-six".