166017 has 4 divisors (see below), whose sum is σ = 221360. Its totient is φ = 110676.

The previous prime is 166013. The next prime is 166021. The reversal of 166017 is 710661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (166013) and next prime (166021).

It is not a de Polignac number, because 166017 - 2² = 166013 is a prime.

It is a D-number.

It is a Duffinian number.

166017 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 165984 and 166002.

It is not an unprimeable number, because it can be changed into a prime (166013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27667 + ... + 27672.

It is an arithmetic number, because the mean of its divisors is an integer number (55340).

2¹⁶⁶⁰¹⁷ is an apocalyptic number.

It is an amenable number.

166017 is a deficient number, since it is larger than the sum of its proper divisors (55343).

166017 is an equidigital number, since it uses as much as digits as its factorization.

166017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55342.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 166017 is about 407.4518376446. The cubic root of 166017 is about 54.9605226353.

Adding to 166017 its reverse (710661), we get a palindrome (876678).

Subtracting 166017 from its reverse (710661), we obtain a square (544644 = 738²).

The spelling of 166017 in words is "one hundred sixty-six thousand, seventeen".