165965673 has 8 divisors (see below), whose sum is σ = 221349088. Its totient is φ = 110613024.

The previous prime is 165965669. The next prime is 165965707. The reversal of 165965673 is 376569561.

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

It is not a de Polignac number, because 165965673 - 2² = 165965669 is a prime.

It is a super-2 number, since 2×165965673² = 55089209228685858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165965623) 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, 12390 + ... + 22032.

It is an arithmetic number, because the mean of its divisors is an integer number (27668636).

Almost surely, 2^165965673 is an apocalyptic number.

It is an amenable number.

165965673 is a deficient number, since it is larger than the sum of its proper divisors (55383415).

165965673 is an equidigital number, since it uses as much as digits as its factorization.

165965673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15383.

The product of its digits is 1020600, while the sum is 48.

The square root of 165965673 is about 12882.7665118949. The cubic root of 165965673 is about 549.5485805573.

The spelling of 165965673 in words is "one hundred sixty-five million, nine hundred sixty-five thousand, six hundred seventy-three".