866808668 has 36 divisors (see below), whose sum is σ = 1676001096. Its totient is φ = 391960800.

The previous prime is 866808661. The next prime is 866808673.

866808668 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866808661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90803 + ... + 99893.

It is an arithmetic number, because the mean of its divisors is an integer number (46555586).

Almost surely, 2^866808668 is an apocalyptic number.

It is an amenable number.

866808668 is a deficient number, since it is larger than the sum of its proper divisors (809192428).

866808668 is a wasteful number, since it uses less digits than its factorization.

866808668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9314 (or 9301 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 56.

The square root of 866808668 is about 29441.6145617050. The cubic root of 866808668 is about 953.4715710125.

The spelling of 866808668 in words is "eight hundred sixty-six million, eight hundred eight thousand, six hundred sixty-eight".