9666869 has 4 divisors (see below), whose sum is σ = 9731040. Its totient is φ = 9602700.

The previous prime is 9666851. The next prime is 9666887. The reversal of 9666869 is 9686669.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (9666851) and next prime (9666887).

It is a cyclic number.

It is not a de Polignac number, because 9666869 - 2²⁰ = 8618293 is a prime.

It is a super-2 number, since 2×9666869² = 186896712526322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9666169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31859 + ... + 32160.

It is an arithmetic number, because the mean of its divisors is an integer number (2432760).

Almost surely, 2^9666869 is an apocalyptic number.

It is an amenable number.

9666869 is a deficient number, since it is larger than the sum of its proper divisors (64171).

9666869 is a wasteful number, since it uses less digits than its factorization.

9666869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64170.

The product of its digits is 839808, while the sum is 50.

The square root of 9666869 is about 3109.1588894748. The cubic root of 9666869 is about 213.0240371971.

The spelling of 9666869 in words is "nine million, six hundred sixty-six thousand, eight hundred sixty-nine".