2606403 has 4 divisors (see below), whose sum is σ = 3475208. Its totient is φ = 1737600.

The previous prime is 2606393. The next prime is 2606407. The reversal of 2606403 is 3046062.

2606403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2606403 - 2¹² = 2602307 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2606403.

It is not an unprimeable number, because it can be changed into a prime (2606407) by changing a digit.

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, 434398 + ... + 434403.

It is an arithmetic number, because the mean of its divisors is an integer number (868802).

2^2606403 is an apocalyptic number.

2606403 is a deficient number, since it is larger than the sum of its proper divisors (868805).

2606403 is an equidigital number, since it uses as much as digits as its factorization.

2606403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868804.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2606403 is about 1614.4358147663. The cubic root of 2606403 is about 137.6196732226.

The spelling of 2606403 in words is "two million, six hundred six thousand, four hundred three".