161085 has 8 divisors (see below), whose sum is σ = 257760. Its totient is φ = 85904.

The previous prime is 161071. The next prime is 161087. The reversal of 161085 is 580161.

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

It is a cyclic number.

It is not a de Polignac number, because 161085 - 2⁵ = 161053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5355 + ... + 5384.

It is an arithmetic number, because the mean of its divisors is an integer number (32220).

2¹⁶¹⁰⁸⁵ is an apocalyptic number.

161085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161085 is a deficient number, since it is larger than the sum of its proper divisors (96675).

161085 is a wasteful number, since it uses less digits than its factorization.

161085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10747.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 161085 is about 401.3539584955. The cubic root of 161085 is about 54.4107902832.

The spelling of 161085 in words is "one hundred sixty-one thousand, eighty-five".