3686650769 has 10 divisors (see below), whose sum is σ = 3891600690. Its totient is φ = 3492493056.

The previous prime is 3686650699. The next prime is 3686650777. The reversal of 3686650769 is 9670566863.

It can be written as a sum of positive squares in only one way, i.e., 3634522369 + 52128400 = 60287^2 + 7220^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3686650769 is a prime.

It is a super-2 number, since 2×3686650769² = 27182787785136582722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3686250769) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 116177 + ... + 144465.

It is an arithmetic number, because the mean of its divisors is an integer number (389160069).

Almost surely, 2^3686650769 is an apocalyptic number.

It is an amenable number.

3686650769 is a deficient number, since it is larger than the sum of its proper divisors (204949921).

3686650769 is an frugal number, since it uses more digits than its factorization.

3686650769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28365 (or 28308 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 56.

The square root of 3686650769 is about 60717.7961474229. The cubic root of 3686650769 is about 1544.8180427587.

The spelling of 3686650769 in words is "three billion, six hundred eighty-six million, six hundred fifty thousand, seven hundred sixty-nine".