160905 has 16 divisors (see below), whose sum is σ = 273024. Its totient is φ = 80640.

The previous prime is 160903. The next prime is 160907. The reversal of 160905 is 509061.

160905 = T₁₂₉ + T₁₃₀ + ... + T₁₄₅.

It is an interprime number because it is at equal distance from previous prime (160903) and next prime (160907).

It is not a de Polignac number, because 160905 - 2¹ = 160903 is a prime.

160905 is a lucky number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (160903) 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, 61 + ... + 570.

It is an arithmetic number, because the mean of its divisors is an integer number (17064).

2¹⁶⁰⁹⁰⁵ is an apocalyptic number.

160905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

160905 is a deficient number, since it is larger than the sum of its proper divisors (112119).

160905 is a wasteful number, since it uses less digits than its factorization.

160905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 160905 is about 401.1296548499. The cubic root of 160905 is about 54.3905161163.

Adding to 160905 its reverse (509061), we get a palindrome (669966).

It can be divided in two parts, 1 and 60905, that added together give a palindrome (60906).

The spelling of 160905 in words is "one hundred sixty thousand, nine hundred five".