866222668 has 6 divisors (see below), whose sum is σ = 1515889676. Its totient is φ = 433111332.

The previous prime is 866222657. The next prime is 866222729.

866222668 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108277830 + ... + 108277837.

Almost surely, 2^866222668 is an apocalyptic number.

It is an amenable number.

866222668 is a deficient number, since it is larger than the sum of its proper divisors (649667008).

866222668 is a wasteful number, since it uses less digits than its factorization.

866222668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216555671 (or 216555669 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The square root of 866222668 is about 29431.6609792924. The cubic root of 866222668 is about 953.2566599569.

The spelling of 866222668 in words is "eight hundred sixty-six million, two hundred twenty-two thousand, six hundred sixty-eight".