165768668 has 12 divisors (see below), whose sum is σ = 312410280. Its totient is φ = 76508592.

The previous prime is 165768667. The next prime is 165768677. The reversal of 165768668 is 866867561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165768667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1593878 + ... + 1593981.

It is an arithmetic number, because the mean of its divisors is an integer number (26034190).

Almost surely, 2^165768668 is an apocalyptic number.

It is an amenable number.

165768668 is a deficient number, since it is larger than the sum of its proper divisors (146641612).

165768668 is a wasteful number, since it uses less digits than its factorization.

165768668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187876 (or 3187874 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The square root of 165768668 is about 12875.1181742149. The cubic root of 165768668 is about 549.3310522745.

The spelling of 165768668 in words is "one hundred sixty-five million, seven hundred sixty-eight thousand, six hundred sixty-eight".