164866 has 16 divisors (see below), whose sum is σ = 282744. Its totient is φ = 71424.

The previous prime is 164839. The next prime is 164881. The reversal of 164866 is 668461.

It can be written as a sum of positive squares in 4 ways, for example, as 137641 + 27225 = 371^2 + 165^2 .

It is an unprimeable number.

164866 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 in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 628.

2¹⁶⁴⁸⁶⁶ is an apocalyptic number.

164866 is a deficient number, since it is larger than the sum of its proper divisors (117878).

164866 is a wasteful number, since it uses less digits than its factorization.

164866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its digits is 6912, while the sum is 31.

The square root of 164866 is about 406.0369441319. The cubic root of 164866 is about 54.8332137440.

The spelling of 164866 in words is "one hundred sixty-four thousand, eight hundred sixty-six".