2840587 has 4 divisors (see below), whose sum is σ = 2887216. Its totient is φ = 2793960.

The previous prime is 2840549. The next prime is 2840627. The reversal of 2840587 is 7850482.

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 2840587 - 2⁷ = 2840459 is a prime.

It is a Duffinian number.

2840587 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2840507) 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, 23223 + ... + 23344.

It is an arithmetic number, because the mean of its divisors is an integer number (721804).

2^2840587 is an apocalyptic number.

2840587 is a deficient number, since it is larger than the sum of its proper divisors (46629).

2840587 is an equidigital number, since it uses as much as digits as its factorization.

2840587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46628.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2840587 is about 1685.4041058452. The cubic root of 2840587 is about 141.6237310871.

The spelling of 2840587 in words is "two million, eight hundred forty thousand, five hundred eighty-seven".