9665172 has 36 divisors (see below), whose sum is σ = 26653536. Its totient is φ = 2928720.

The previous prime is 9665143. The next prime is 9665189. The reversal of 9665172 is 2715669.

9665172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (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, 11808 + ... + 12599.

It is an arithmetic number, because the mean of its divisors is an integer number (740376).

Almost surely, 2^9665172 is an apocalyptic number.

It is an amenable number.

9665172 is an abundant number, since it is smaller than the sum of its proper divisors (16988364).

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

9665172 is a wasteful number, since it uses less digits than its factorization.

9665172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24428 (or 24423 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 9665172 is about 3108.8859741071. The cubic root of 9665172 is about 213.0115711495.

The spelling of 9665172 in words is "nine million, six hundred sixty-five thousand, one hundred seventy-two".