9535681 has 2 divisors, whose sum is σ = 9535682. Its totient is φ = 9535680.

The previous prime is 9535679. The next prime is 9535697. The reversal of 9535681 is 1865359.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6713281 + 2822400 = 2591^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 9535681 - 2¹ = 9535679 is a prime.

It is a super-2 number, since 2×9535681² = 181858424267522, which contains 22 as substring.

Together with 9535679, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9535681.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9535651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4767840 + 4767841.

It is an arithmetic number, because the mean of its divisors is an integer number (4767841).

Almost surely, 2^9535681 is an apocalyptic number.

It is an amenable number.

9535681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9535681 is an equidigital number, since it uses as much as digits as its factorization.

9535681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 37.

The square root of 9535681 is about 3087.9897992059. The cubic root of 9535681 is about 212.0560030639.

The spelling of 9535681 in words is "nine million, five hundred thirty-five thousand, six hundred eighty-one".