9638681 has 8 divisors (see below), whose sum is σ = 10926720. Its totient is φ = 8428752.

The previous prime is 9638659. The next prime is 9638743. The reversal of 9638681 is 1868369.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9638681 - 2¹⁴ = 9622297 is a prime.

It is a super-2 number, since 2×9638681² = 185808342839522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9638621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19265 + ... + 19758.

It is an arithmetic number, because the mean of its divisors is an integer number (1365840).

Almost surely, 2^9638681 is an apocalyptic number.

It is an amenable number.

9638681 is a deficient number, since it is larger than the sum of its proper divisors (1288039).

9638681 is a wasteful number, since it uses less digits than its factorization.

9638681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39055.

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

The square root of 9638681 is about 3104.6225213381. The cubic root of 9638681 is about 212.8167805868.

The spelling of 9638681 in words is "nine million, six hundred thirty-eight thousand, six hundred eighty-one".