9857660 has 12 divisors (see below), whose sum is σ = 20701128. Its totient is φ = 3943056.

The previous prime is 9857657. The next prime is 9857663. The reversal of 9857660 is 667589.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9857657) and next prime (9857663).

It is a hoax number, since the sum of its digits (41) 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 (9857663) 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 3 ways as a sum of consecutive naturals, for example, 246422 + ... + 246461.

It is an arithmetic number, because the mean of its divisors is an integer number (1725094).

Almost surely, 2^9857660 is an apocalyptic number.

It is an amenable number.

9857660 is an abundant number, since it is smaller than the sum of its proper divisors (10843468).

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

9857660 is a wasteful number, since it uses less digits than its factorization.

9857660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492892 (or 492890 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 9857660 is about 3139.6910676052. The cubic root of 9857660 is about 214.4163728029.

The spelling of 9857660 in words is "nine million, eight hundred fifty-seven thousand, six hundred sixty".