166814 has 4 divisors (see below), whose sum is σ = 250224. Its totient is φ = 83406.

The previous prime is 166807. The next prime is 166823. The reversal of 166814 is 418661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 418661 = 499 ⋅839.

It is a congruent number.

It is an unprimeable number.

166814 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41702 + ... + 41705.

It is an arithmetic number, because the mean of its divisors is an integer number (62556).

2¹⁶⁶⁸¹⁴ is an apocalyptic number.

166814 is a deficient number, since it is larger than the sum of its proper divisors (83410).

166814 is an equidigital number, since it uses as much as digits as its factorization.

166814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83409.

The product of its digits is 1152, while the sum is 26.

The square root of 166814 is about 408.4286963474. The cubic root of 166814 is about 55.0483321705.

The spelling of 166814 in words is "one hundred sixty-six thousand, eight hundred fourteen".