9688621 has 4 divisors (see below), whose sum is σ = 9701244. Its totient is φ = 9676000.

The previous prime is 9688619. The next prime is 9688649. The reversal of 9688621 is 1268869.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3861225 + 5827396 = 1965^2 + 2414^2 .

It is a cyclic number.

It is not a de Polignac number, because 9688621 - 2¹ = 9688619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9688421) 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 in 3 ways as a sum of consecutive naturals, for example, 5080 + ... + 6721.

It is an arithmetic number, because the mean of its divisors is an integer number (2425311).

Almost surely, 2^9688621 is an apocalyptic number.

It is an amenable number.

9688621 is a deficient number, since it is larger than the sum of its proper divisors (12623).

9688621 is a wasteful number, since it uses less digits than its factorization.

9688621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12622.

The product of its digits is 41472, while the sum is 40.

The square root of 9688621 is about 3112.6549760614. The cubic root of 9688621 is about 213.1836968785.

The spelling of 9688621 in words is "nine million, six hundred eighty-eight thousand, six hundred twenty-one".