3681716587 has 4 divisors (see below), whose sum is σ = 3693555216. Its totient is φ = 3669877960.

The previous prime is 3681716567. The next prime is 3681716609. The reversal of 3681716587 is 7856171863.

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

It is a cyclic number.

It is not a de Polignac number, because 3681716587 - 2¹¹ = 3681714539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681716527) 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, 5918848 + ... + 5919469.

It is an arithmetic number, because the mean of its divisors is an integer number (923388804).

Almost surely, 2^3681716587 is an apocalyptic number.

3681716587 is a deficient number, since it is larger than the sum of its proper divisors (11838629).

3681716587 is a wasteful number, since it uses less digits than its factorization.

3681716587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11838628.

The product of its digits is 1693440, while the sum is 52.

The square root of 3681716587 is about 60677.1504522089. The cubic root of 3681716587 is about 1544.1285446226.

The spelling of 3681716587 in words is "three billion, six hundred eighty-one million, seven hundred sixteen thousand, five hundred eighty-seven".