866909668 has 24 divisors (see below), whose sum is σ = 1569016064. Its totient is φ = 418672800.

The previous prime is 866909663. The next prime is 866909677.

866909668 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (866909663) 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, 61438 + ... + 74218.

Almost surely, 2^866909668 is an apocalyptic number.

It is an amenable number.

866909668 is a deficient number, since it is larger than the sum of its proper divisors (702106396).

866909668 is a wasteful number, since it uses less digits than its factorization.

866909668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13363 (or 13361 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 58.

The square root of 866909668 is about 29443.3297709345. The cubic root of 866909668 is about 953.5086022098.

The spelling of 866909668 in words is "eight hundred sixty-six million, nine hundred nine thousand, six hundred sixty-eight".