159967 has 4 divisors (see below), whose sum is σ = 160776.
Its totient is φ = 159160.
The previous prime is 159937. The next prime is 159977. The reversal of 159967 is 769951.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 159967 - 27 = 159839 is a prime.
It is a Duffinian number.
159967 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (159937) 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, 117 + ... + 577.
It is an arithmetic number, because the mean of its divisors is an integer number (40194).
2159967 is an apocalyptic number.
159967 is a deficient number, since it is larger than the sum of its proper divisors (809).
159967 is an equidigital number, since it uses as much as digits as its factorization.
159967 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 808.
The product of its digits is 17010, while the sum is 37.
The square root of 159967 is about 399.9587478728.
The cubic root of 159967 is about 54.2846197510.
The spelling of 159967 in words is "one hundred fifty-nine thousand, nine hundred sixty-seven".