9866616 has 32 divisors (see below), whose sum is σ = 25194240. Its totient is φ = 3218528.

The previous prime is 9866611. The next prime is 9866627. The reversal of 9866616 is 6166689.

9866616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9866616² = 194700222582912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 3246 + ... + 5501.

It is an arithmetic number, because the mean of its divisors is an integer number (787320).

Almost surely, 2^9866616 is an apocalyptic number.

It is an amenable number.

9866616 is an abundant number, since it is smaller than the sum of its proper divisors (15327624).

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

9866616 is a wasteful number, since it uses less digits than its factorization.

9866616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8803 (or 8799 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 9866616 is about 3141.1169987761. The cubic root of 9866616 is about 214.4812878629.

The spelling of 9866616 in words is "nine million, eight hundred sixty-six thousand, six hundred sixteen".