165710065 has 16 divisors (see below), whose sum is σ = 203129856. Its totient is φ = 129729600.

The previous prime is 165710063. The next prime is 165710071. The reversal of 165710065 is 560017561.

165710065 = T₂₀₆ + T₂₀₇ + ... + T₁₀₀₀.

It is not a de Polignac number, because 165710065 - 2¹ = 165710063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165710063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166720 + ... + 167710.

It is an arithmetic number, because the mean of its divisors is an integer number (12695616).

Almost surely, 2^165710065 is an apocalyptic number.

It is an amenable number.

165710065 is a deficient number, since it is larger than the sum of its proper divisors (37419791).

165710065 is an equidigital number, since it uses as much as digits as its factorization.

165710065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 165710065 is about 12872.8421492691. The cubic root of 165710065 is about 549.2663109649.

The spelling of 165710065 in words is "one hundred sixty-five million, seven hundred ten thousand, sixty-five".