171607 has 4 divisors (see below), whose sum is σ = 174096. Its totient is φ = 169120.

The previous prime is 171583. The next prime is 171617. The reversal of 171607 is 706171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 706171 = 59 ⋅11969.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171607 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171617) 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, 1138 + ... + 1279.

It is an arithmetic number, because the mean of its divisors is an integer number (43524).

2¹⁷¹⁶⁰⁷ is an apocalyptic number.

171607 is a deficient number, since it is larger than the sum of its proper divisors (2489).

171607 is an equidigital number, since it uses as much as digits as its factorization.

171607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 171607 is about 414.2547525376. The cubic root of 171607 is about 55.5705889686.

Adding to 171607 its reverse (706171), we get a palindrome (877778).

The spelling of 171607 in words is "one hundred seventy-one thousand, six hundred seven".