2867987 has 8 divisors (see below), whose sum is σ = 2956800. Its totient is φ = 2780424.

The previous prime is 2867959. The next prime is 2868001. The reversal of 2867987 is 7897682.

2867987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2867987 - 2⁶ = 2867923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2867947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6314 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (369600).

2^2867987 is an apocalyptic number.

2867987 is a deficient number, since it is larger than the sum of its proper divisors (88813).

2867987 is a wasteful number, since it uses less digits than its factorization.

2867987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its digits is 338688, while the sum is 47.

The square root of 2867987 is about 1693.5132122307. The cubic root of 2867987 is about 142.0776372380.

The spelling of 2867987 in words is "two million, eight hundred sixty-seven thousand, nine hundred eighty-seven".