9893681 has 16 divisors (see below), whose sum is σ = 11796480. Its totient is φ = 8119440.

The previous prime is 9893659. The next prime is 9893687. The reversal of 9893681 is 1863989.

It is a de Polignac number, because none of the positive numbers 2^k-9893681 is a prime.

It is a super-2 number, since 2×9893681² = 195769847459522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9893687) 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, 27380 + ... + 27738.

It is an arithmetic number, because the mean of its divisors is an integer number (737280).

Almost surely, 2^9893681 is an apocalyptic number.

It is an amenable number.

9893681 is a deficient number, since it is larger than the sum of its proper divisors (1902799).

9893681 is a wasteful number, since it uses less digits than its factorization.

9893681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its digits is 93312, while the sum is 44.

The square root of 9893681 is about 3145.4222292087. The cubic root of 9893681 is about 214.6772225283.

The spelling of 9893681 in words is "nine million, eight hundred ninety-three thousand, six hundred eighty-one".