2606440 has 32 divisors (see below), whose sum is σ = 6211080. Its totient is φ = 980992.

The previous prime is 2606437. The next prime is 2606459. The reversal of 2606440 is 446062.

2606440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2079364 + 527076 = 1442^2 + 726^2 .

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 7 ways as a sum of consecutive naturals, for example, 1237 + ... + 2596.

2^2606440 is an apocalyptic number.

2606440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2606440 is an abundant number, since it is smaller than the sum of its proper divisors (3604640).

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

2606440 is a wasteful number, since it uses less digits than its factorization.

2606440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861 (or 3857 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2606440 is about 1614.4472738371. The cubic root of 2606440 is about 137.6203244270.

The spelling of 2606440 in words is "two million, six hundred six thousand, four hundred forty".