2587679 has 4 divisors (see below), whose sum is σ = 2642784. Its totient is φ = 2532576.

The previous prime is 2587649. The next prime is 2587693. The reversal of 2587679 is 9767852.

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 2587679 - 2⁸ = 2587423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587609) 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, 27482 + ... + 27575.

It is an arithmetic number, because the mean of its divisors is an integer number (660696).

2^2587679 is an apocalyptic number.

2587679 is a deficient number, since it is larger than the sum of its proper divisors (55105).

2587679 is an equidigital number, since it uses as much as digits as its factorization.

2587679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55104.

The product of its digits is 211680, while the sum is 44.

The square root of 2587679 is about 1608.6264327059. The cubic root of 2587679 is about 137.2893347024.

The spelling of 2587679 in words is "two million, five hundred eighty-seven thousand, six hundred seventy-nine".