9863681 has 4 divisors (see below), whose sum is σ = 9870000. Its totient is φ = 9857364.

The previous prime is 9863677. The next prime is 9863701. The reversal of 9863681 is 1863689.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9863681 - 2² = 9863677 is a prime.

It is a super-2 number, since 2×9863681² = 194584405739522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9863081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (2467500).

Almost surely, 2^9863681 is an apocalyptic number.

It is an amenable number.

9863681 is a deficient number, since it is larger than the sum of its proper divisors (6319).

9863681 is a wasteful number, since it uses less digits than its factorization.

9863681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6318.

The product of its digits is 62208, while the sum is 41.

The square root of 9863681 is about 3140.6497735341. The cubic root of 9863681 is about 214.4600186656.

The spelling of 9863681 in words is "nine million, eight hundred sixty-three thousand, six hundred eighty-one".