3871085 has 4 divisors (see below), whose sum is σ = 4645308. Its totient is φ = 3096864.

The previous prime is 3871081. The next prime is 3871103. The reversal of 3871085 is 5801783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1249924 + 2621161 = 1118^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 3871085 - 2² = 3871081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387104 + ... + 387113.

It is an arithmetic number, because the mean of its divisors is an integer number (1161327).

Almost surely, 2^3871085 is an apocalyptic number.

It is an amenable number.

3871085 is a deficient number, since it is larger than the sum of its proper divisors (774223).

3871085 is an equidigital number, since it uses as much as digits as its factorization.

3871085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774222.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 3871085 is about 1967.5073062126. The cubic root of 3871085 is about 157.0161179985.

The spelling of 3871085 in words is "three million, eight hundred seventy-one thousand, eighty-five".