3686773661 has 16 divisors (see below), whose sum is σ = 4057568640. Its totient is φ = 3334256640.

The previous prime is 3686773621. The next prime is 3686773667. The reversal of 3686773661 is 1663776863.

It is a de Polignac number, because none of the positive numbers 2^k-3686773661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686773667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219581 + ... + 235773.

It is an arithmetic number, because the mean of its divisors is an integer number (253598040).

Almost surely, 2^3686773661 is an apocalyptic number.

It is an amenable number.

3686773661 is a deficient number, since it is larger than the sum of its proper divisors (370794979).

3686773661 is a wasteful number, since it uses less digits than its factorization.

3686773661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16756.

The product of its digits is 4572288, while the sum is 53.

The square root of 3686773661 is about 60718.8081322419. The cubic root of 3686773661 is about 1544.8352077215.

The spelling of 3686773661 in words is "three billion, six hundred eighty-six million, seven hundred seventy-three thousand, six hundred sixty-one".