166593 has 8 divisors (see below), whose sum is σ = 253888. Its totient is φ = 95184.

The previous prime is 166571. The next prime is 166597. The reversal of 166593 is 395661.

It is a happy number.

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

It is not a de Polignac number, because 166593 - 2⁵ = 166561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166593.

It is not an unprimeable number, because it can be changed into a prime (166597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3946 + ... + 3987.

It is an arithmetic number, because the mean of its divisors is an integer number (31736).

2¹⁶⁶⁵⁹³ is an apocalyptic number.

It is an amenable number.

166593 is a deficient number, since it is larger than the sum of its proper divisors (87295).

166593 is an equidigital number, since it uses as much as digits as its factorization.

166593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7943.

The product of its digits is 4860, while the sum is 30.

The square root of 166593 is about 408.1580576198. The cubic root of 166593 is about 55.0240115542.

The spelling of 166593 in words is "one hundred sixty-six thousand, five hundred ninety-three".