9693681 has 4 divisors (see below), whose sum is σ = 12924912. Its totient is φ = 6462452.

The previous prime is 9693661. The next prime is 9693713. The reversal of 9693681 is 1863969.

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 a de Polignac number, because none of the positive numbers 2^k-9693681 is a prime.

It is a super-2 number, since 2×9693681² = 187934902659522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9693631) 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, 1615611 + ... + 1615616.

It is an arithmetic number, because the mean of its divisors is an integer number (3231228).

Almost surely, 2^9693681 is an apocalyptic number.

It is an amenable number.

9693681 is a deficient number, since it is larger than the sum of its proper divisors (3231231).

9693681 is a wasteful number, since it uses less digits than its factorization.

9693681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231230.

The product of its digits is 69984, while the sum is 42.

The square root of 9693681 is about 3113.4676808986. The cubic root of 9693681 is about 213.2208030112.

The spelling of 9693681 in words is "nine million, six hundred ninety-three thousand, six hundred eighty-one".