164666 has 8 divisors (see below), whose sum is σ = 248724. Its totient is φ = 81760.

The previous prime is 164663. The next prime is 164677. The reversal of 164666 is 666461.

It can be written as a sum of positive squares in 2 ways, for example, as 143641 + 21025 = 379^2 + 145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×164666² = 54229783112, which contains 22 as substring.

Its product of digits (5184) is a multiple of the sum of its prime divisors (576).

164666 is a modest number, since divided by 666 gives 164 as remainder.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 164666.

It is not an unprimeable number, because it can be changed into a prime (164663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416 + ... + 708.

2¹⁶⁴⁶⁶⁶ is an apocalyptic number.

164666 is a deficient number, since it is larger than the sum of its proper divisors (84058).

164666 is a wasteful number, since it uses less digits than its factorization.

164666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its digits is 5184, while the sum is 29.

The square root of 164666 is about 405.7905863866. The cubic root of 164666 is about 54.8110319310.

The spelling of 164666 in words is "one hundred sixty-four thousand, six hundred sixty-six".