8631222 has 8 divisors (see below), whose sum is σ = 17262456. Its totient is φ = 2877072.

The previous prime is 8631199. The next prime is 8631229. The reversal of 8631222 is 2221368.

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

8631222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 8631192 and 8631201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8631229) 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 3 ways as a sum of consecutive naturals, for example, 719263 + ... + 719274.

It is an arithmetic number, because the mean of its divisors is an integer number (2157807).

Almost surely, 2^8631222 is an apocalyptic number.

8631222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8631222 is a wasteful number, since it uses less digits than its factorization.

8631222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438542.

The product of its digits is 1152, while the sum is 24.

The square root of 8631222 is about 2937.8941437703. The cubic root of 8631222 is about 205.1275985316.

The spelling of 8631222 in words is "eight million, six hundred thirty-one thousand, two hundred twenty-two".