9861648 has 40 divisors (see below), whose sum is σ = 26102496. Its totient is φ = 3206400.

The previous prime is 9861637. The next prime is 9861661. The reversal of 9861648 is 8461689.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538 + ... + 4473.

Almost surely, 2^9861648 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 9861648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13051248).

9861648 is an abundant number, since it is smaller than the sum of its proper divisors (16240848).

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

9861648 is a wasteful number, since it uses less digits than its factorization.

9861648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063 (or 5057 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 9861648 is about 3140.3260977166. The cubic root of 9861648 is about 214.4452835589.

The spelling of 9861648 in words is "nine million, eight hundred sixty-one thousand, six hundred forty-eight".