171406 has 4 divisors (see below), whose sum is σ = 257112. Its totient is φ = 85702.

The previous prime is 171403. The next prime is 171427. The reversal of 171406 is 604171.

It is a happy number.

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

It is a pancake number, because a pancake can be divided into 171406 parts by 585 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42850 + ... + 42853.

It is an arithmetic number, because the mean of its divisors is an integer number (64278).

2¹⁷¹⁴⁰⁶ is an apocalyptic number.

171406 is a deficient number, since it is larger than the sum of its proper divisors (85706).

171406 is an equidigital number, since it uses as much as digits as its factorization.

171406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85705.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 171406 is about 414.0120771185. The cubic root of 171406 is about 55.5488842360.

Adding to 171406 its reverse (604171), we get a palindrome (775577).

The spelling of 171406 in words is "one hundred seventy-one thousand, four hundred six".