3688836705 has 12 divisors (see below), whose sum is σ = 6393983700. Its totient is φ = 1967379552.

The previous prime is 3688836703. The next prime is 3688836709. The reversal of 3688836705 is 5076388863.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2048829696 + 1640007009 = 45264^2 + 40497^2 .

It is not a de Polignac number, because 3688836705 - 2¹ = 3688836703 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3688836703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40987030 + ... + 40987119.

It is an arithmetic number, because the mean of its divisors is an integer number (532831975).

Almost surely, 2^3688836705 is an apocalyptic number.

It is an amenable number.

3688836705 is a deficient number, since it is larger than the sum of its proper divisors (2705146995).

3688836705 is a wasteful number, since it uses less digits than its factorization.

3688836705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81974160 (or 81974157 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The square root of 3688836705 is about 60735.7942649967. The cubic root of 3688836705 is about 1545.1233068394.

The spelling of 3688836705 in words is "three billion, six hundred eighty-eight million, eight hundred thirty-six thousand, seven hundred five".