160999 has 4 divisors (see below), whose sum is σ = 162360. Its totient is φ = 159640.

The previous prime is 160997. The next prime is 161009. The reversal of 160999 is 999061.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 160999 - 2¹ = 160997 is a prime.

It is a Duffinian number.

160999 is a modest number, since divided by 999 gives 160 as remainder.

160999 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160997) 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 3 ways as a sum of consecutive naturals, for example, 484 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (40590).

2¹⁶⁰⁹⁹⁹ is an apocalyptic number.

160999 is a deficient number, since it is larger than the sum of its proper divisors (1361).

160999 is a wasteful number, since it uses less digits than its factorization.

160999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 160999 is about 401.2468068409. The cubic root of 160999 is about 54.4011056220.

The spelling of 160999 in words is "one hundred sixty thousand, nine hundred ninety-nine".