2403613 has 6 divisors (see below), whose sum is σ = 2553626. Its totient is φ = 2261952.

The previous prime is 2403593. The next prime is 2403619. The reversal of 2403613 is 3163042.

2403613 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 3 ways, for example, as 1734489 + 669124 = 1317^2 + 818^2 .

It is not a de Polignac number, because 2403613 - 2⁵ = 2403581 is a prime.

It is a Duffinian number.

2403613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2403619) 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 5 ways as a sum of consecutive naturals, for example, 3870 + ... + 4447.

2^2403613 is an apocalyptic number.

It is an amenable number.

2403613 is a deficient number, since it is larger than the sum of its proper divisors (150013).

2403613 is an equidigital number, since it uses as much as digits as its factorization.

2403613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351 (or 8334 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2403613 is about 1550.3589906857. The cubic root of 2403613 is about 133.9537413655.

Adding to 2403613 its reverse (3163042), we get a palindrome (5566655).

The spelling of 2403613 in words is "two million, four hundred three thousand, six hundred thirteen".