3860581 has 4 divisors (see below), whose sum is σ = 4087692. Its totient is φ = 3633472.

The previous prime is 3860561. The next prime is 3860587. The reversal of 3860581 is 1850683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1850683 = 1063 ⋅1741.

It can be written as a sum of positive squares in 2 ways, for example, as 3363556 + 497025 = 1834^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 3860581 - 2²¹ = 1763429 is a prime.

It is a super-2 number, since 2×3860581² = 29808171315122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) 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.

3860581 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3860587) 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, 113530 + ... + 113563.

It is an arithmetic number, because the mean of its divisors is an integer number (1021923).

Almost surely, 2^3860581 is an apocalyptic number.

It is an amenable number.

3860581 is a deficient number, since it is larger than the sum of its proper divisors (227111).

3860581 is a wasteful number, since it uses less digits than its factorization.

3860581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227110.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 3860581 is about 1964.8361254822. The cubic root of 3860581 is about 156.8739708297.

The spelling of 3860581 in words is "three million, eight hundred sixty thousand, five hundred eighty-one".