9866612 has 36 divisors (see below), whose sum is σ = 20485920. Its totient is φ = 4072992.

The previous prime is 9866611. The next prime is 9866627. The reversal of 9866612 is 2166689.

9866612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9866611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23339 + ... + 23757.

Almost surely, 2^9866612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9866612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10242960).

9866612 is an abundant number, since it is smaller than the sum of its proper divisors (10619308).

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

9866612 is a wasteful number, since it uses less digits than its factorization.

9866612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 457 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 9866612 is about 3141.1163620598. The cubic root of 9866612 is about 214.4812588788.

The spelling of 9866612 in words is "nine million, eight hundred sixty-six thousand, six hundred twelve".