2001587 has 8 divisors (see below), whose sum is σ = 2319456. Its totient is φ = 1691712.

The previous prime is 2001583. The next prime is 2001611. The reversal of 2001587 is 7851002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001587 - 2² = 2001583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1448 + ... + 2469.

It is an arithmetic number, because the mean of its divisors is an integer number (289932).

2^2001587 is an apocalyptic number.

2001587 is a deficient number, since it is larger than the sum of its proper divisors (317869).

2001587 is an equidigital number, since it uses as much as digits as its factorization.

2001587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 2001587 is about 1414.7745403420. The cubic root of 2001587 is about 126.0254210907.

Adding to 2001587 its reverse (7851002), we get a palindrome (9852589).

It can be divided in two parts, 20015 and 87, that added together give a palindrome (20102).

The spelling of 2001587 in words is "two million, one thousand, five hundred eighty-seven".