2605880 has 16 divisors (see below), whose sum is σ = 5863320. Its totient is φ = 1042336.

The previous prime is 2605871. The next prime is 2605909. The reversal of 2605880 is 885062.

It is a happy number.

2605880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2605880² = 13581221148800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32534 + ... + 32613.

2^2605880 is an apocalyptic number.

2605880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605880 is an abundant number, since it is smaller than the sum of its proper divisors (3257440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2605880 is a wasteful number, since it uses less digits than its factorization.

2605880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65158 (or 65154 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2605880 is about 1614.2738305504. The cubic root of 2605880 is about 137.6104677002.

The spelling of 2605880 in words is "two million, six hundred five thousand, eight hundred eighty".