3857705 has 8 divisors (see below), whose sum is σ = 4681800. Its totient is φ = 3051136.

The previous prime is 3857683. The next prime is 3857717. The reversal of 3857705 is 5077583.

It can be written as a sum of positive squares in 4 ways, for example, as 63001 + 3794704 = 251^2 + 1948^2 .

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 3857705 - 2⁶ = 3857641 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3890 + ... + 4779.

It is an arithmetic number, because the mean of its divisors is an integer number (585225).

Almost surely, 2^3857705 is an apocalyptic number.

It is an amenable number.

3857705 is a deficient number, since it is larger than the sum of its proper divisors (824095).

3857705 is an equidigital number, since it uses as much as digits as its factorization.

3857705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 3857705 is about 1964.1041214763. The cubic root of 3857705 is about 156.8350059155.

The spelling of 3857705 in words is "three million, eight hundred fifty-seven thousand, seven hundred five".