196566 has 12 divisors (see below), whose sum is σ = 395316. Its totient is φ = 65160.

The previous prime is 196561. The next prime is 196579. The reversal of 196566 is 665691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196561) by changing a digit.

196566 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 5 ways as a sum of consecutive naturals, for example, 996 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (32943).

196566 is a Friedman number, since it can be written as 6*((9-1)^5-6)-6, using all its digits and the basic arithmetic operations.

2¹⁹⁶⁵⁶⁶ is an apocalyptic number.

196566 is an abundant number, since it is smaller than the sum of its proper divisors (198750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196566 is an equidigital number, since it uses as much as digits as its factorization.

196566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 186 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 196566 is about 443.3576434438. The cubic root of 196566 is about 58.1437181015.

The spelling of 196566 in words is "one hundred ninety-six thousand, five hundred sixty-six".