9820863 has 12 divisors (see below), whose sum is σ = 15277080. Its totient is φ = 6043536.

The previous prime is 9820861. The next prime is 9820871. The reversal of 9820863 is 3680289.

It is not a de Polignac number, because 9820863 - 2¹ = 9820861 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9820861) 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, 41853 + ... + 42086.

It is an arithmetic number, because the mean of its divisors is an integer number (1273090).

Almost surely, 2^9820863 is an apocalyptic number.

9820863 is a deficient number, since it is larger than the sum of its proper divisors (5456217).

9820863 is a wasteful number, since it uses less digits than its factorization.

9820863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83958 (or 83955 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 9820863 is about 3133.8256173565. The cubic root of 9820863 is about 214.1492466330.

The spelling of 9820863 in words is "nine million, eight hundred twenty thousand, eight hundred sixty-three".