9642681 has 24 divisors (see below), whose sum is σ = 14938560. Its totient is φ = 5978016.

The previous prime is 9642679. The next prime is 9642683. The reversal of 9642681 is 1862469.

9642681 is a `hidden beast` number, since 9 + 642 + 6 + 8 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (9642679) and next prime (9642683).

It is not a de Polignac number, because 9642681 - 2¹ = 9642679 is a prime.

It is a super-2 number, since 2×9642681² = 185962593735522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9642683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7030 + ... + 8288.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^9642681 is an apocalyptic number.

It is an amenable number.

9642681 is a deficient number, since it is larger than the sum of its proper divisors (5295879).

9642681 is a wasteful number, since it uses less digits than its factorization.

9642681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1322 counting only the distinct ones).

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

The square root of 9642681 is about 3105.2666552166. The cubic root of 9642681 is about 212.8462157828.

The spelling of 9642681 in words is "nine million, six hundred forty-two thousand, six hundred eighty-one".