168223609 has 8 divisors (see below), whose sum is σ = 171561600. Its totient is φ = 164913696.

The previous prime is 168223607. The next prime is 168223613. The reversal of 168223609 is 906322861.

168223609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168223609 - 2¹ = 168223607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168223607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5292 + ... + 19090.

It is an arithmetic number, because the mean of its divisors is an integer number (21445200).

Almost surely, 2^168223609 is an apocalyptic number.

It is an amenable number.

168223609 is a deficient number, since it is larger than the sum of its proper divisors (3337991).

168223609 is a wasteful number, since it uses less digits than its factorization.

168223609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14039.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 168223609 is about 12970.1044328872. The cubic root of 168223609 is about 552.0295363755.

The spelling of 168223609 in words is "one hundred sixty-eight million, two hundred twenty-three thousand, six hundred nine".