9659691 has 12 divisors (see below), whose sum is σ = 14018368. Its totient is φ = 6409584.

The previous prime is 9659653. The next prime is 9659711. The reversal of 9659691 is 1969569.

9659691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9659691 - 2¹⁹ = 9135403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9659491) 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, 400 + ... + 4413.

Almost surely, 2^9659691 is an apocalyptic number.

9659691 is a deficient number, since it is larger than the sum of its proper divisors (4358677).

9659691 is a wasteful number, since it uses less digits than its factorization.

9659691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042 (or 5039 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 9659691 is about 3108.0043436263. The cubic root of 9659691 is about 212.9712981229.

The spelling of 9659691 in words is "nine million, six hundred fifty-nine thousand, six hundred ninety-one".