3871705 has 16 divisors (see below), whose sum is σ = 4904064. Its totient is φ = 2928640.

The previous prime is 3871691. The next prime is 3871759. The reversal of 3871705 is 5071783.

It is not a de Polignac number, because 3871705 - 2¹³ = 3863513 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 14937 + ... + 15193.

It is an arithmetic number, because the mean of its divisors is an integer number (306504).

Almost surely, 2^3871705 is an apocalyptic number.

It is an amenable number.

3871705 is a deficient number, since it is larger than the sum of its proper divisors (1032359).

3871705 is a wasteful number, since it uses less digits than its factorization.

3871705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 3871705 is about 1967.6648596750. The cubic root of 3871705 is about 157.0245002132.

The spelling of 3871705 in words is "three million, eight hundred seventy-one thousand, seven hundred five".