11680205 has 16 divisors (see below), whose sum is σ = 14943744. Its totient is φ = 8743680.

The previous prime is 11680189. The next prime is 11680213. The reversal of 11680205 is 50208611.

It is not a de Polignac number, because 11680205 - 2⁴ = 11680189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4325 + ... + 6485.

It is an arithmetic number, because the mean of its divisors is an integer number (933984).

Almost surely, 2^11680205 is an apocalyptic number.

It is an amenable number.

11680205 is a deficient number, since it is larger than the sum of its proper divisors (3263539).

11680205 is a wasteful number, since it uses less digits than its factorization.

11680205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 11680205 is about 3417.6314897894. The cubic root of 11680205 is about 226.8907662067.

Adding to 11680205 its reverse (50208611), we get a palindrome (61888816).

The spelling of 11680205 in words is "eleven million, six hundred eighty thousand, two hundred five".