9691559 has 2 divisors, whose sum is σ = 9691560. Its totient is φ = 9691558.

The previous prime is 9691543. The next prime is 9691573. The reversal of 9691559 is 9551969.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9691559 - 2⁴ = 9691543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9691519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4845779 + 4845780.

It is an arithmetic number, because the mean of its divisors is an integer number (4845780).

Almost surely, 2^9691559 is an apocalyptic number.

9691559 is a deficient number, since it is larger than the sum of its proper divisors (1).

9691559 is an equidigital number, since it uses as much as digits as its factorization.

9691559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109350, while the sum is 44.

The square root of 9691559 is about 3113.1268846611. The cubic root of 9691559 is about 213.2052434743.

The spelling of 9691559 in words is "nine million, six hundred ninety-one thousand, five hundred fifty-nine".