8668161 has 32 divisors (see below), whose sum is σ = 13788800. Its totient is φ = 5365440.

The previous prime is 8668157. The next prime is 8668193. The reversal of 8668161 is 1618668.

It is not a de Polignac number, because 8668161 - 2² = 8668157 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

8668161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8668111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31155 + ... + 31431.

It is an arithmetic number, because the mean of its divisors is an integer number (430900).

Almost surely, 2^8668161 is an apocalyptic number.

It is an amenable number.

8668161 is a deficient number, since it is larger than the sum of its proper divisors (5120639).

8668161 is a wasteful number, since it uses less digits than its factorization.

8668161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 360 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 8668161 is about 2944.1740777339. The cubic root of 8668161 is about 205.4198099399.

The spelling of 8668161 in words is "eight million, six hundred sixty-eight thousand, one hundred sixty-one".