9855657 has 24 divisors (see below), whose sum is σ = 16500224. Its totient is φ = 5552064.

The previous prime is 9855647. The next prime is 9855689. The reversal of 9855657 is 7565589.

9855657 is a `hidden beast` number, since 9 + 85 + 565 + 7 = 666.

It is not a de Polignac number, because 9855657 - 2⁸ = 9855401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9855607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3528 + ... + 5670.

Almost surely, 2^9855657 is an apocalyptic number.

It is an amenable number.

9855657 is a deficient number, since it is larger than the sum of its proper divisors (6644567).

9855657 is a wasteful number, since it uses less digits than its factorization.

9855657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2226 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 9855657 is about 3139.3720709722. The cubic root of 9855657 is about 214.4018492382.

It can be divided in two parts, 98 and 55657, that added together give a palindrome (55755).

The spelling of 9855657 in words is "nine million, eight hundred fifty-five thousand, six hundred fifty-seven".