822643266 has 16 divisors (see below), whose sum is σ = 1731880800. Its totient is φ = 259782048.

The previous prime is 822643253. The next prime is 822643267. The reversal of 822643266 is 662346228.

It is not an unprimeable number, because it can be changed into a prime (822643267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3607971 + ... + 3608198.

It is an arithmetic number, because the mean of its divisors is an integer number (108242550).

Almost surely, 2^822643266 is an apocalyptic number.

822643266 is an abundant number, since it is smaller than the sum of its proper divisors (909237534).

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

822643266 is a wasteful number, since it uses less digits than its factorization.

822643266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7216193.

The product of its digits is 165888, while the sum is 39.

The square root of 822643266 is about 28681.7584188975. The cubic root of 822643266 is about 936.9948035083.

The spelling of 822643266 in words is "eight hundred twenty-two million, six hundred forty-three thousand, two hundred sixty-six".