2605879 has 4 divisors (see below), whose sum is σ = 2759184. Its totient is φ = 2452576.

The previous prime is 2605871. The next prime is 2605909. The reversal of 2605879 is 9785062.

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 2605879 - 2³ = 2605871 is a prime.

It is a Duffinian number.

2605879 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605871) 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 3 ways as a sum of consecutive naturals, for example, 76627 + ... + 76660.

It is an arithmetic number, because the mean of its divisors is an integer number (689796).

2^2605879 is an apocalyptic number.

2605879 is a deficient number, since it is larger than the sum of its proper divisors (153305).

2605879 is a wasteful number, since it uses less digits than its factorization.

2605879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153304.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2605879 is about 1614.2735208136. The cubic root of 2605879 is about 137.6104500976.

The spelling of 2605879 in words is "two million, six hundred five thousand, eight hundred seventy-nine".