120566165 has 32 divisors (see below), whose sum is σ = 154047744. Its totient is φ = 90478080.

The previous prime is 120566111. The next prime is 120566177. The reversal of 120566165 is 561665021.

It is not a de Polignac number, because 120566165 - 2¹⁸ = 120304021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879977 + ... + 880113.

It is an arithmetic number, because the mean of its divisors is an integer number (4813992).

Almost surely, 2^120566165 is an apocalyptic number.

It is an amenable number.

120566165 is a deficient number, since it is larger than the sum of its proper divisors (33481579).

120566165 is a wasteful number, since it uses less digits than its factorization.

120566165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 120566165 is about 10980.2625196304. The cubic root of 120566165 is about 494.0169108604.

The spelling of 120566165 in words is "one hundred twenty million, five hundred sixty-six thousand, one hundred sixty-five".