196506 has 20 divisors (see below), whose sum is σ = 440682. Its totient is φ = 65448.

The previous prime is 196501. The next prime is 196519. The reversal of 196506 is 605691.

196506 is a `hidden beast` number, since 1 + 9 + 650 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 194481 + 2025 = 441^2 + 45^2 .

It is a super-2 number, since 2×196506² = 77229216072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 196506.

It is not an unprimeable number, because it can be changed into a prime (196501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 445 + ... + 768.

2¹⁹⁶⁵⁰⁶ is an apocalyptic number.

196506 is an abundant number, since it is smaller than the sum of its proper divisors (244176).

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

196506 is a wasteful number, since it uses less digits than its factorization.

196506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 196506 is about 443.2899728169. The cubic root of 196506 is about 58.1378015508.

The spelling of 196506 in words is "one hundred ninety-six thousand, five hundred six".