9985618 has 4 divisors (see below), whose sum is σ = 14978430. Its totient is φ = 4992808.

The previous prime is 9985607. The next prime is 9985631. The reversal of 9985618 is 8165899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9690769 + 294849 = 3113^2 + 543^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2496403 + ... + 2496406.

Almost surely, 2^9985618 is an apocalyptic number.

9985618 is a deficient number, since it is larger than the sum of its proper divisors (4992812).

9985618 is a wasteful number, since it uses less digits than its factorization.

9985618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992811.

The product of its digits is 155520, while the sum is 46.

The square root of 9985618 is about 3160.0028481000. The cubic root of 9985618 is about 215.3401358504.

The spelling of 9985618 in words is "nine million, nine hundred eighty-five thousand, six hundred eighteen".