3865705 has 8 divisors (see below), whose sum is σ = 4660992. Its totient is φ = 3077808.

The previous prime is 3865691. The next prime is 3865733. The reversal of 3865705 is 5075683.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3865705 - 2⁷ = 3865577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619 + ... + 2848.

It is an arithmetic number, because the mean of its divisors is an integer number (582624).

Almost surely, 2^3865705 is an apocalyptic number.

It is an amenable number.

3865705 is a deficient number, since it is larger than the sum of its proper divisors (795287).

3865705 is a wasteful number, since it uses less digits than its factorization.

3865705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 3865705 is about 1966.1396186436. The cubic root of 3865705 is about 156.9433443999.

The spelling of 3865705 in words is "three million, eight hundred sixty-five thousand, seven hundred five".