3881585 has 4 divisors (see below), whose sum is σ = 4657908. Its totient is φ = 3105264.

The previous prime is 3881573. The next prime is 3881587. The reversal of 3881585 is 5851883.

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 1270129 + 2611456 = 1127^2 + 1616^2 .

It is a cyclic number.

It is not a de Polignac number, because 3881585 - 2¹⁰ = 3880561 is a prime.

It is a super-2 number, since 2×3881585² = 30133404224450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3881587) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 388154 + ... + 388163.

It is an arithmetic number, because the mean of its divisors is an integer number (1164477).

Almost surely, 2^3881585 is an apocalyptic number.

It is an amenable number.

3881585 is a deficient number, since it is larger than the sum of its proper divisors (776323).

3881585 is an equidigital number, since it uses as much as digits as its factorization.

3881585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776322.

The product of its digits is 38400, while the sum is 38.

The square root of 3881585 is about 1970.1738501970. The cubic root of 3881585 is about 157.1579542756.

The spelling of 3881585 in words is "three million, eight hundred eighty-one thousand, five hundred eighty-five".