3686705005 has 4 divisors (see below), whose sum is σ = 4424046012. Its totient is φ = 2949364000.

The previous prime is 3686705003. The next prime is 3686705021. The reversal of 3686705005 is 5005076863.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1493281449 + 2193423556 = 38643^2 + 46834^2 .

It is not a de Polignac number, because 3686705005 - 2¹ = 3686705003 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 (3686705003) 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, 368670496 + ... + 368670505.

It is an arithmetic number, because the mean of its divisors is an integer number (1106011503).

Almost surely, 2^3686705005 is an apocalyptic number.

It is an amenable number.

3686705005 is a deficient number, since it is larger than the sum of its proper divisors (737341007).

3686705005 is an equidigital number, since it uses as much as digits as its factorization.

3686705005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737341006.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 3686705005 is about 60718.2427693687. The cubic root of 3686705005 is about 1544.8256182290.

The spelling of 3686705005 in words is "three billion, six hundred eighty-six million, seven hundred five thousand, five".