9806688 has 72 divisors (see below), whose sum is σ = 29542968. Its totient is φ = 3075072.

The previous prime is 9806683. The next prime is 9806689. The reversal of 9806688 is 8866089.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×9806688² = 192342259058688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9806681) 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, 3895 + ... + 5897.

It is an arithmetic number, because the mean of its divisors is an integer number (410319).

Almost surely, 2^9806688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9806688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14771484).

9806688 is an abundant number, since it is smaller than the sum of its proper divisors (19736280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9806688 is a wasteful number, since it uses less digits than its factorization.

9806688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 2025 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 9806688 is about 3131.5631879303. The cubic root of 9806688 is about 214.0461658341.

The spelling of 9806688 in words is "nine million, eight hundred six thousand, six hundred eighty-eight".