165960065 has 8 divisors (see below), whose sum is σ = 207811008. Its totient is φ = 126995440.

The previous prime is 165960061. The next prime is 165960083. The reversal of 165960065 is 560069561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165960065 - 2² = 165960061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165960061) 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, 721451 + ... + 721680.

It is an arithmetic number, because the mean of its divisors is an integer number (25976376).

Almost surely, 2^165960065 is an apocalyptic number.

It is an amenable number.

165960065 is a deficient number, since it is larger than the sum of its proper divisors (41850943).

165960065 is a wasteful number, since it uses less digits than its factorization.

165960065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443159.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 165960065 is about 12882.5488549433. The cubic root of 165960065 is about 549.5423907168.

The spelling of 165960065 in words is "one hundred sixty-five million, nine hundred sixty thousand, sixty-five".