3860665 has 16 divisors (see below), whose sum is σ = 4924800. Its totient is φ = 2899072.

The previous prime is 3860663. The next prime is 3860687. The reversal of 3860665 is 5660683.

It is a cyclic number.

It is not a de Polignac number, because 3860665 - 2¹ = 3860663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3860665.

It is not an unprimeable number, because it can be changed into a prime (3860663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6501 + ... + 7069.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^3860665 is an apocalyptic number.

It is an amenable number.

3860665 is a deficient number, since it is larger than the sum of its proper divisors (1064135).

3860665 is a wasteful number, since it uses less digits than its factorization.

3860665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 3860665 is about 1964.8575011944. The cubic root of 3860665 is about 156.8751085961.

The spelling of 3860665 in words is "three million, eight hundred sixty thousand, six hundred sixty-five".