165370071 has 4 divisors (see below), whose sum is σ = 220493432. Its totient is φ = 110246712.

The previous prime is 165370031. The next prime is 165370087. The reversal of 165370071 is 170073561.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 165370071 - 2⁷ = 165369943 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 (165370001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27561676 + ... + 27561681.

It is an arithmetic number, because the mean of its divisors is an integer number (55123358).

Almost surely, 2^165370071 is an apocalyptic number.

165370071 is a deficient number, since it is larger than the sum of its proper divisors (55123361).

165370071 is an equidigital number, since it uses as much as digits as its factorization.

165370071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55123360.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 165370071 is about 12859.6295047719. The cubic root of 165370071 is about 548.8904031710.

The spelling of 165370071 in words is "one hundred sixty-five million, three hundred seventy thousand, seventy-one".