9801663 has 16 divisors (see below), whose sum is σ = 13987200. Its totient is φ = 6086880.

The previous prime is 9801647. The next prime is 9801677. The reversal of 9801663 is 3661089.

It is not a de Polignac number, because 9801663 - 2⁴ = 9801647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9801613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2068 + ... + 4886.

It is an arithmetic number, because the mean of its divisors is an integer number (874200).

Almost surely, 2^9801663 is an apocalyptic number.

9801663 is a deficient number, since it is larger than the sum of its proper divisors (4185537).

9801663 is a wasteful number, since it uses less digits than its factorization.

9801663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 9801663 is about 3130.7607701643. The cubic root of 9801663 is about 214.0096001167.

The spelling of 9801663 in words is "nine million, eight hundred one thousand, six hundred sixty-three".