9669647 has 4 divisors (see below), whose sum is σ = 10413480. Its totient is φ = 8925816.

The previous prime is 9669631. The next prime is 9669661. The reversal of 9669647 is 7469669.

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

It is a cyclic number.

It is not a de Polignac number, because 9669647 - 2⁴ = 9669631 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 (9669607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371897 + ... + 371922.

It is an arithmetic number, because the mean of its divisors is an integer number (2603370).

Almost surely, 2^9669647 is an apocalyptic number.

9669647 is a deficient number, since it is larger than the sum of its proper divisors (743833).

9669647 is a wasteful number, since it uses less digits than its factorization.

9669647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743832.

The product of its digits is 489888, while the sum is 47.

The square root of 9669647 is about 3109.6056020016. The cubic root of 9669647 is about 213.0444410492.

The spelling of 9669647 in words is "nine million, six hundred sixty-nine thousand, six hundred forty-seven".