3986087506665 has 32 divisors (see below), whose sum is σ = 6959517207552. Its totient is φ = 1932097752000.

The previous prime is 3986087506663. The next prime is 3986087506669. The reversal of 3986087506665 is 5666057806893.

3986087506665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3986087506665 - 2¹ = 3986087506663 is a prime.

It is a super-2 number, since 2×3986087506665² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3986087506665.

It is not an unprimeable number, because it can be changed into a prime (3986087506663) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2861031 + ... + 4019660.

It is an arithmetic number, because the mean of its divisors is an integer number (217484912736).

Almost surely, 2^{3986087506665} is an apocalyptic number.

It is an amenable number.

3986087506665 is a deficient number, since it is larger than the sum of its proper divisors (2973429700887).

3986087506665 is a wasteful number, since it uses less digits than its factorization.

3986087506665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6884221.

The product of its (nonzero) digits is 391910400, while the sum is 69.

The spelling of 3986087506665 in words is "three trillion, nine hundred eighty-six billion, eighty-seven million, five hundred six thousand, six hundred sixty-five".