166838 has 16 divisors (see below), whose sum is σ = 303264. Its totient is φ = 67200.

The previous prime is 166823. The next prime is 166841. The reversal of 166838 is 838661.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113 + ... + 588.

It is an arithmetic number, because the mean of its divisors is an integer number (18954).

2¹⁶⁶⁸³⁸ is an apocalyptic number.

166838 is a deficient number, since it is larger than the sum of its proper divisors (136426).

166838 is a wasteful number, since it uses less digits than its factorization.

166838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its digits is 6912, while the sum is 32.

The square root of 166838 is about 408.4580761841. The cubic root of 166838 is about 55.0509720301.

The spelling of 166838 in words is "one hundred sixty-six thousand, eight hundred thirty-eight".