3705608813 has 4 divisors (see below), whose sum is σ = 3923585820. Its totient is φ = 3487631808.

The previous prime is 3705608771. The next prime is 3705608843. The reversal of 3705608813 is 3188065073.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3188065073 = 44267 ⋅72019.

It can be written as a sum of positive squares in 2 ways, for example, as 3246492484 + 459116329 = 56978^2 + 21427^2 .

It is a cyclic number.

It is not a de Polignac number, because 3705608813 - 2²⁸ = 3437173357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3705608843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108988478 + ... + 108988511.

It is an arithmetic number, because the mean of its divisors is an integer number (980896455).

Almost surely, 2^3705608813 is an apocalyptic number.

It is an amenable number.

3705608813 is a deficient number, since it is larger than the sum of its proper divisors (217977007).

3705608813 is a wasteful number, since it uses less digits than its factorization.

3705608813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217977006.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 3705608813 is about 60873.7120028013. The cubic root of 3705608813 is about 1547.4615144198.

The spelling of 3705608813 in words is "three billion, seven hundred five million, six hundred eight thousand, eight hundred thirteen".