9165661 has 16 divisors (see below), whose sum is σ = 9974016. Its totient is φ = 8401536.

The previous prime is 9165647. The next prime is 9165679. The reversal of 9165661 is 1665619.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9165661 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9165631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88936 + ... + 89038.

It is an arithmetic number, because the mean of its divisors is an integer number (623376).

Almost surely, 2^9165661 is an apocalyptic number.

It is an amenable number.

9165661 is a deficient number, since it is larger than the sum of its proper divisors (808355).

9165661 is a wasteful number, since it uses less digits than its factorization.

9165661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252.

The product of its digits is 9720, while the sum is 34.

The square root of 9165661 is about 3027.4842691581. The cubic root of 9165661 is about 209.2768855219.

The spelling of 9165661 in words is "nine million, one hundred sixty-five thousand, six hundred sixty-one".