9745681 has 4 divisors (see below), whose sum is σ = 10631664. Its totient is φ = 8859700.

The previous prime is 9745669. The next prime is 9745699. The reversal of 9745681 is 1865479.

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.

It is a cyclic number.

It is not a de Polignac number, because 9745681 - 2¹¹ = 9743633 is a prime.

It is a super-2 number, since 2×9745681² = 189956596307522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9745621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442975 + ... + 442996.

It is an arithmetic number, because the mean of its divisors is an integer number (2657916).

Almost surely, 2^9745681 is an apocalyptic number.

It is an amenable number.

9745681 is a deficient number, since it is larger than the sum of its proper divisors (885983).

9745681 is a wasteful number, since it uses less digits than its factorization.

9745681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885982.

The product of its digits is 60480, while the sum is 40.

The square root of 9745681 is about 3121.8073290964. The cubic root of 9745681 is about 213.6013847886.

The spelling of 9745681 in words is "nine million, seven hundred forty-five thousand, six hundred eighty-one".