9691668 has 36 divisors (see below), whose sum is σ = 27998880. Its totient is φ = 2768976.

The previous prime is 9691639. The next prime is 9691673. The reversal of 9691668 is 8661969.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18978 + ... + 19481.

Almost surely, 2^9691668 is an apocalyptic number.

It is an amenable number.

9691668 is an abundant number, since it is smaller than the sum of its proper divisors (18307212).

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

9691668 is a wasteful number, since it uses less digits than its factorization.

9691668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38476 (or 38471 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 9691668 is about 3113.1443911261. The cubic root of 9691668 is about 213.2060427707.

The spelling of 9691668 in words is "nine million, six hundred ninety-one thousand, six hundred sixty-eight".