866951222 has 16 divisors (see below), whose sum is σ = 1307568192. Its totient is φ = 431101440.

The previous prime is 866951221. The next prime is 866951231. The reversal of 866951222 is 222159668.

It is a self number, because there is not a number n which added to its sum of digits gives 866951222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866951221) 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, 409238 + ... + 411350.

It is an arithmetic number, because the mean of its divisors is an integer number (81723012).

Almost surely, 2^866951222 is an apocalyptic number.

866951222 is a deficient number, since it is larger than the sum of its proper divisors (440616970).

866951222 is a wasteful number, since it uses less digits than its factorization.

866951222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143.

The product of its digits is 103680, while the sum is 41.

The square root of 866951222 is about 29444.0354231549. The cubic root of 866951222 is about 953.5238369626.

The spelling of 866951222 in words is "eight hundred sixty-six million, nine hundred fifty-one thousand, two hundred twenty-two".