2605855 has 8 divisors (see below), whose sum is σ = 3573792. Its totient is φ = 1786848.

The previous prime is 2605849. The next prime is 2605871. The reversal of 2605855 is 5585062.

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

It is not a de Polignac number, because 2605855 - 2³ = 2605847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 37192 + ... + 37261.

It is an arithmetic number, because the mean of its divisors is an integer number (446724).

2^2605855 is an apocalyptic number.

2605855 is a deficient number, since it is larger than the sum of its proper divisors (967937).

2605855 is an equidigital number, since it uses as much as digits as its factorization.

2605855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74465.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2605855 is about 1614.2660871120. The cubic root of 2605855 is about 137.6100276348.

The spelling of 2605855 in words is "two million, six hundred five thousand, eight hundred fifty-five".