168601309 has 8 divisors (see below), whose sum is σ = 170424320. Its totient is φ = 166783536.

The previous prime is 168601297. The next prime is 168601327. The reversal of 168601309 is 903106861.

168601309 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 168601309 - 2¹¹ = 168599261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168601369) 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, 117772 + ... + 119194.

It is an arithmetic number, because the mean of its divisors is an integer number (21303040).

Almost surely, 2^168601309 is an apocalyptic number.

It is an amenable number.

168601309 is a deficient number, since it is larger than the sum of its proper divisors (1823011).

168601309 is a wasteful number, since it uses less digits than its factorization.

168601309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 168601309 is about 12984.6566762468. The cubic root of 168601309 is about 552.4423712269.

The spelling of 168601309 in words is "one hundred sixty-eight million, six hundred one thousand, three hundred nine".