3881587 has 2 divisors, whose sum is σ = 3881588. Its totient is φ = 3881586.

The previous prime is 3881573. The next prime is 3881597. The reversal of 3881587 is 7851883.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3881587 is a prime.

3881587 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3881597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1940793 + 1940794.

It is an arithmetic number, because the mean of its divisors is an integer number (1940794).

Almost surely, 2^3881587 is an apocalyptic number.

3881587 is a deficient number, since it is larger than the sum of its proper divisors (1).

3881587 is an equidigital number, since it uses as much as digits as its factorization.

3881587 is an evil number, because the sum of its binary digits is even.

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

The square root of 3881587 is about 1970.1743577663. The cubic root of 3881587 is about 157.1579812677.

The spelling of 3881587 in words is "three million, eight hundred eighty-one thousand, five hundred eighty-seven".