9868866 has 64 divisors (see below), whose sum is σ = 24192000. Its totient is φ = 2621376.

The previous prime is 9868853. The next prime is 9868867. The reversal of 9868866 is 6688689.

It is a super-2 number, since 2×9868866² = 194789032251912, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9868867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66160 + ... + 66308.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^9868866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9868866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12096000).

9868866 is an abundant number, since it is smaller than the sum of its proper divisors (14323134).

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

9868866 is a wasteful number, since it uses less digits than its factorization.

9868866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its digits is 995328, while the sum is 51.

The square root of 9868866 is about 3141.4751312083. The cubic root of 9868866 is about 214.4975901838.

The spelling of 9868866 in words is "nine million, eight hundred sixty-eight thousand, eight hundred sixty-six".