3856605 has 8 divisors (see below), whose sum is σ = 6170592. Its totient is φ = 2056848.

The previous prime is 3856597. The next prime is 3856607. The reversal of 3856605 is 5066583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3856605 - 2³ = 3856597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128539 + ... + 128568.

It is an arithmetic number, because the mean of its divisors is an integer number (771324).

Almost surely, 2^3856605 is an apocalyptic number.

It is an amenable number.

3856605 is a deficient number, since it is larger than the sum of its proper divisors (2313987).

3856605 is a wasteful number, since it uses less digits than its factorization.

3856605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257115.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 3856605 is about 1963.8240756239. The cubic root of 3856605 is about 156.8200976642.

The spelling of 3856605 in words is "three million, eight hundred fifty-six thousand, six hundred five".