9861606 has 24 divisors (see below), whose sum is σ = 21425040. Its totient is φ = 3278256.

The previous prime is 9861583. The next prime is 9861611. The reversal of 9861606 is 6061689.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11335 + ... + 12173.

It is an arithmetic number, because the mean of its divisors is an integer number (892710).

Almost surely, 2^9861606 is an apocalyptic number.

9861606 is an abundant number, since it is smaller than the sum of its proper divisors (11563434).

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

9861606 is a wasteful number, since it uses less digits than its factorization.

9861606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 9861606 is about 3140.3194105059. The cubic root of 9861606 is about 214.4449791231. Note that the first 3 decimals are identical.

The spelling of 9861606 in words is "nine million, eight hundred sixty-one thousand, six hundred six".