165066560 has 56 divisors (see below), whose sum is σ = 398983200. Its totient is φ = 65032704.

The previous prime is 165066553. The next prime is 165066563. The reversal of 165066560 is 65660561.

165066560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 165066560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165066563) 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, 17591 + ... + 25289.

It is an arithmetic number, because the mean of its divisors is an integer number (7124700).

Almost surely, 2^165066560 is an apocalyptic number.

165066560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165066560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199491600).

165066560 is an abundant number, since it is smaller than the sum of its proper divisors (233916640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165066560 is an equidigital number, since it uses as much as digits as its factorization.

165066560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7783 (or 7773 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 165066560 is about 12847.8231619212. The cubic root of 165066560 is about 548.5543965859.

The spelling of 165066560 in words is "one hundred sixty-five million, sixty-six thousand, five hundred sixty".