3887185 has 4 divisors (see below), whose sum is σ = 4664628. Its totient is φ = 3109744.

The previous prime is 3887173. The next prime is 3887197. The reversal of 3887185 is 5817883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5817883 = 181 ⋅32143.

It is an interprime number because it is at equal distance from previous prime (3887173) and next prime (3887197).

It can be written as a sum of positive squares in 2 ways, for example, as 1628176 + 2259009 = 1276^2 + 1503^2 .

It is a cyclic number.

It is not a de Polignac number, because 3887185 - 2⁷ = 3887057 is a prime.

It is a super-2 number, since 2×3887185² = 30220414448450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

3887185 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388714 + ... + 388723.

It is an arithmetic number, because the mean of its divisors is an integer number (1166157).

Almost surely, 2^3887185 is an apocalyptic number.

It is an amenable number.

3887185 is a deficient number, since it is larger than the sum of its proper divisors (777443).

3887185 is an equidigital number, since it uses as much as digits as its factorization.

3887185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777442.

The product of its digits is 53760, while the sum is 40.

The square root of 3887185 is about 1971.5945323519. The cubic root of 3887185 is about 157.2334957230.

The spelling of 3887185 in words is "three million, eight hundred eighty-seven thousand, one hundred eighty-five".