3666808588686 has 16 divisors (see below), whose sum is σ = 7360879698000. Its totient is φ = 1217725776128.

The previous prime is 3666808588649. The next prime is 3666808588691. The reversal of 3666808588686 is 6868858086663.

It is a super-2 number, since 2×3666808588686² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135936611 + ... + 1135939838.

It is an arithmetic number, because the mean of its divisors is an integer number (460054981125).

Almost surely, 2^{3666808588686} is an apocalyptic number.

3666808588686 is an abundant number, since it is smaller than the sum of its proper divisors (3694071109314).

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

3666808588686 is a wasteful number, since it uses less digits than its factorization.

3666808588686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271876723.

The product of its (nonzero) digits is 3822059520, while the sum is 78.

The spelling of 3666808588686 in words is "three trillion, six hundred sixty-six billion, eight hundred eight million, five hundred eighty-eight thousand, six hundred eighty-six".