2640303 has 8 divisors (see below), whose sum is σ = 3911600. Its totient is φ = 1760184.

The previous prime is 2640299. The next prime is 2640317. The reversal of 2640303 is 3030462.

2640303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2640303 - 2² = 2640299 is a prime.

It is an Ulam number.

It is a Duffinian number.

2640303 is a modest number, since divided by 303 gives 264 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640343) 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 7 ways as a sum of consecutive naturals, for example, 48868 + ... + 48921.

It is an arithmetic number, because the mean of its divisors is an integer number (488950).

2^2640303 is an apocalyptic number.

2640303 is a deficient number, since it is larger than the sum of its proper divisors (1271297).

2640303 is an equidigital number, since it uses as much as digits as its factorization.

2640303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97798 (or 97792 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 2640303 is about 1624.9009200564. The cubic root of 2640303 is about 138.2137519188.

Adding to 2640303 its reverse (3030462), we get a palindrome (5670765).

The spelling of 2640303 in words is "two million, six hundred forty thousand, three hundred three".