9681659 has 12 divisors (see below), whose sum is σ = 11009376. Its totient is φ = 8462448.

The previous prime is 9681649. The next prime is 9681677. The reversal of 9681659 is 9561869.

It is a de Polignac number, because none of the positive numbers 2^k-9681659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9681629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3662 + ... + 5724.

It is an arithmetic number, because the mean of its divisors is an integer number (917448).

Almost surely, 2^9681659 is an apocalyptic number.

9681659 is a deficient number, since it is larger than the sum of its proper divisors (1327717).

9681659 is a wasteful number, since it uses less digits than its factorization.

9681659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114 (or 2095 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The square root of 9681659 is about 3111.5364371963. The cubic root of 9681659 is about 213.1326218239.

The spelling of 9681659 in words is "nine million, six hundred eighty-one thousand, six hundred fifty-nine".