3685317812 has 18 divisors (see below), whose sum is σ = 7088907714. Its totient is φ = 1675144240.

The previous prime is 3685317803. The next prime is 3685317821. The reversal of 3685317812 is 2187135863.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3685317803) and next prime (3685317821).

It can be written as a sum of positive squares in only one way, i.e., 3628375696 + 56942116 = 60236^2 + 7546^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3806663 + ... + 3807630.

Almost surely, 2^3685317812 is an apocalyptic number.

It is an amenable number.

3685317812 is a deficient number, since it is larger than the sum of its proper divisors (3403589902).

3685317812 is a wasteful number, since it uses less digits than its factorization.

3685317812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7614319 (or 7614306 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 3685317812 is about 60706.8184967718. The cubic root of 3685317812 is about 1544.6318372317.

The spelling of 3685317812 in words is "three billion, six hundred eighty-five million, three hundred seventeen thousand, eight hundred twelve".