3985582665 has 32 divisors (see below), whose sum is σ = 6625307520. Its totient is φ = 2043485696.

The previous prime is 3985582661. The next prime is 3985582693. The reversal of 3985582665 is 5662855893.

3985582665 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 3985582665 - 2² = 3985582661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3985582661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81694 + ... + 121016.

It is an arithmetic number, because the mean of its divisors is an integer number (207040860).

Almost surely, 2^3985582665 is an apocalyptic number.

It is an amenable number.

3985582665 is a deficient number, since it is larger than the sum of its proper divisors (2639724855).

3985582665 is a wasteful number, since it uses less digits than its factorization.

3985582665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39593.

The product of its digits is 15552000, while the sum is 57.

The square root of 3985582665 is about 63131.4712722585. The cubic root of 3985582665 is about 1585.4915816091.

The spelling of 3985582665 in words is "three billion, nine hundred eighty-five million, five hundred eighty-two thousand, six hundred sixty-five".