9868661 has 8 divisors (see below), whose sum is σ = 10796448. Its totient is φ = 8946000.

The previous prime is 9868643. The next prime is 9868693. The reversal of 9868661 is 1668689.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9868661 - 2⁶ = 9868597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9868561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3566 + ... + 5696.

It is an arithmetic number, because the mean of its divisors is an integer number (1349556).

Almost surely, 2^9868661 is an apocalyptic number.

It is an amenable number.

9868661 is a deficient number, since it is larger than the sum of its proper divisors (927787).

9868661 is a wasteful number, since it uses less digits than its factorization.

9868661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563.

The product of its digits is 124416, while the sum is 44.

The square root of 9868661 is about 3141.4425030549. The cubic root of 9868661 is about 214.4961049638.

The spelling of 9868661 in words is "nine million, eight hundred sixty-eight thousand, six hundred sixty-one".