3806865 has 32 divisors (see below), whose sum is σ = 6848640. Its totient is φ = 2006208.

The previous prime is 3806851. The next prime is 3806867. The reversal of 3806865 is 5686083.

It is not a de Polignac number, because 3806865 - 2⁴ = 3806849 is a prime.

It is a super-2 number, since 2×3806865² = 28984442256450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3806867) 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, 21919 + ... + 22091.

It is an arithmetic number, because the mean of its divisors is an integer number (214020).

Almost surely, 2^3806865 is an apocalyptic number.

It is an amenable number.

3806865 is a deficient number, since it is larger than the sum of its proper divisors (3041775).

3806865 is a wasteful number, since it uses less digits than its factorization.

3806865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3806865 is about 1951.1189097541. The cubic root of 3806865 is about 156.1429901964.

The spelling of 3806865 in words is "three million, eight hundred six thousand, eight hundred sixty-five".