9688538 has 8 divisors (see below), whose sum is σ = 15387732. Its totient is φ = 4559296.

The previous prime is 9688531. The next prime is 9688571. The reversal of 9688538 is 8358869.

It can be written as a sum of positive squares in 2 ways, for example, as 8427409 + 1261129 = 2903^2 + 1123^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 9688492 and 9688501.

It is not an unprimeable number, because it can be changed into a prime (9688531) 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, 142445 + ... + 142512.

Almost surely, 2^9688538 is an apocalyptic number.

9688538 is a deficient number, since it is larger than the sum of its proper divisors (5699194).

9688538 is a wasteful number, since it uses less digits than its factorization.

9688538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284976.

The product of its digits is 414720, while the sum is 47.

The square root of 9688538 is about 3112.6416433634. The cubic root of 9688538 is about 213.1830881129.

The spelling of 9688538 in words is "nine million, six hundred eighty-eight thousand, five hundred thirty-eight".