9858686663 has 12 divisors (see below), whose sum is σ = 11477997432. Its totient is φ = 8443134000.

The previous prime is 9858686657. The next prime is 9858686671. The reversal of 9858686663 is 3666868589.

It is not a de Polignac number, because 9858686663 - 2⁶ = 9858686599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9858686663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9858686633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26588 + ... + 142913.

It is an arithmetic number, because the mean of its divisors is an integer number (956499786).

Almost surely, 2^9858686663 is an apocalyptic number.

9858686663 is a deficient number, since it is larger than the sum of its proper divisors (1619310769).

9858686663 is a wasteful number, since it uses less digits than its factorization.

9858686663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170702 (or 170695 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 65.

The square root of 9858686663 is about 99290.9193380744. The cubic root of 9858686663 is about 2144.2381627713.

The spelling of 9858686663 in words is "nine billion, eight hundred fifty-eight million, six hundred eighty-six thousand, six hundred sixty-three".