165946 has 16 divisors (see below), whose sum is σ = 286560. Its totient is φ = 71280.

The previous prime is 165941. The next prime is 165947. The reversal of 165946 is 649561.

It is not an unprimeable number, because it can be changed into a prime (165941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220 + ... + 616.

It is an arithmetic number, because the mean of its divisors is an integer number (17910).

2¹⁶⁵⁹⁴⁶ is an apocalyptic number.

165946 is a deficient number, since it is larger than the sum of its proper divisors (120614).

165946 is a wasteful number, since it uses less digits than its factorization.

165946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429.

The product of its digits is 6480, while the sum is 31.

The square root of 165946 is about 407.3647014654. The cubic root of 165946 is about 54.9526865833.

It can be divided in two parts, 165 and 946, that added together give a palindrome (1111).

The spelling of 165946 in words is "one hundred sixty-five thousand, nine hundred forty-six".