165265765 has 8 divisors (see below), whose sum is σ = 226650240. Its totient is φ = 113325072.

The previous prime is 165265757. The next prime is 165265783. The reversal of 165265765 is 567562561.

165265765 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 not a de Polignac number, because 165265765 - 2³ = 165265757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2360905 + ... + 2360974.

It is an arithmetic number, because the mean of its divisors is an integer number (28331280).

Almost surely, 2^165265765 is an apocalyptic number.

It is an amenable number.

165265765 is a deficient number, since it is larger than the sum of its proper divisors (61384475).

165265765 is an equidigital number, since it uses as much as digits as its factorization.

165265765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721891.

The product of its digits is 378000, while the sum is 43.

The square root of 165265765 is about 12855.5733049911. The cubic root of 165265765 is about 548.7749759890.

The spelling of 165265765 in words is "one hundred sixty-five million, two hundred sixty-five thousand, seven hundred sixty-five".