2001887 has 4 divisors (see below), whose sum is σ = 2066496. Its totient is φ = 1937280.

The previous prime is 2001847. The next prime is 2001911. The reversal of 2001887 is 7881002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001887 - 2¹⁰ = 2000863 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001847) 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, 32258 + ... + 32319.

It is an arithmetic number, because the mean of its divisors is an integer number (516624).

2^2001887 is an apocalyptic number.

2001887 is a deficient number, since it is larger than the sum of its proper divisors (64609).

2001887 is an equidigital number, since it uses as much as digits as its factorization.

2001887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64608.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 2001887 is about 1414.8805603301. The cubic root of 2001887 is about 126.0317170511.

Adding to 2001887 its reverse (7881002), we get a palindrome (9882889).

The spelling of 2001887 in words is "two million, one thousand, eight hundred eighty-seven".