9866000 has 40 divisors (see below), whose sum is σ = 23860824. Its totient is φ = 3945600.

The previous prime is 9865993. The next prime is 9866009. The reversal of 9866000 is 6689.

It can be written as a sum of positive squares in 4 ways, for example, as 913936 + 8952064 = 956^2 + 2992^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9866009) 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, 467 + ... + 4466.

Almost surely, 2^9866000 is an apocalyptic number.

It is an amenable number.

9866000 is an abundant number, since it is smaller than the sum of its proper divisors (13994824).

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

9866000 is a wasteful number, since it uses less digits than its factorization.

9866000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4956 (or 4940 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 9866000 is about 3141.0189429547. The cubic root of 9866000 is about 214.4768242176.

The spelling of 9866000 in words is "nine million, eight hundred sixty-six thousand".