9688531 has 2 divisors, whose sum is σ = 9688532. Its totient is φ = 9688530.

The previous prime is 9688517. The next prime is 9688571. The reversal of 9688531 is 1358869.

It is a happy number.

It is an a-pointer prime, because the next prime (9688571) can be obtained adding 9688531 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9688531 - 2⁷ = 9688403 is a prime.

It is a super-2 number, since 2×9688531² = 187735265875922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9688501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4844265 + 4844266.

It is an arithmetic number, because the mean of its divisors is an integer number (4844266).

Almost surely, 2^9688531 is an apocalyptic number.

9688531 is a deficient number, since it is larger than the sum of its proper divisors (1).

9688531 is an equidigital number, since it uses as much as digits as its factorization.

9688531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 9688531 is about 3112.6405189164. The cubic root of 9688531 is about 213.1830367710.

The spelling of 9688531 in words is "nine million, six hundred eighty-eight thousand, five hundred thirty-one".