2013987 has 8 divisors (see below), whose sum is σ = 2700880. Its totient is φ = 1334880.

The previous prime is 2013983. The next prime is 2013989. The reversal of 2013987 is 7893102.

It is a happy number.

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

It is not a de Polignac number, because 2013987 - 2² = 2013983 is a prime.

It is a super-2 number, since 2×2013987² = 8112287272338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312 + ... + 2397.

It is an arithmetic number, because the mean of its divisors is an integer number (337610).

2^2013987 is an apocalyptic number.

2013987 is a deficient number, since it is larger than the sum of its proper divisors (686893).

2013987 is a wasteful number, since it uses less digits than its factorization.

2013987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2013987 is about 1419.1500977698. The cubic root of 2013987 is about 126.2851315491.

The spelling of 2013987 in words is "two million, thirteen thousand, nine hundred eighty-seven".