2604855 has 16 divisors (see below), whose sum is σ = 4546944. Its totient is φ = 1262880.

The previous prime is 2604839. The next prime is 2604857. The reversal of 2604855 is 5584062.

It is not a de Polignac number, because 2604855 - 2⁴ = 2604839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7729 + ... + 8058.

It is an arithmetic number, because the mean of its divisors is an integer number (284184).

2^2604855 is an apocalyptic number.

2604855 is a deficient number, since it is larger than the sum of its proper divisors (1942089).

2604855 is a wasteful number, since it uses less digits than its factorization.

2604855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15806.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2604855 is about 1613.9563191115. The cubic root of 2604855 is about 137.5924227112.

It can be divided in two parts, 260 and 4855, that added together give a palindrome (5115).

The spelling of 2604855 in words is "two million, six hundred four thousand, eight hundred fifty-five".