3886665 has 32 divisors (see below), whose sum is σ = 6566400. Its totient is φ = 1960704.

The previous prime is 3886661. The next prime is 3886679. The reversal of 3886665 is 5666883.

3886665 is nontrivially palindromic in base 11.

It is not a de Polignac number, because 3886665 - 2² = 3886661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3886661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26011 + ... + 26159.

It is an arithmetic number, because the mean of its divisors is an integer number (205200).

Almost surely, 2^3886665 is an apocalyptic number.

It is an amenable number.

3886665 is a deficient number, since it is larger than the sum of its proper divisors (2679735).

3886665 is a wasteful number, since it uses less digits than its factorization.

3886665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241.

The product of its digits is 207360, while the sum is 42.

The square root of 3886665 is about 1971.4626549849. The cubic root of 3886665 is about 157.2264842169.

The spelling of 3886665 in words is "three million, eight hundred eighty-six thousand, six hundred sixty-five".