2403641 has 4 divisors (see below), whose sum is σ = 2406900. Its totient is φ = 2400384.

The previous prime is 2403629. The next prime is 2403659. The reversal of 2403641 is 1463042.

It is a happy number.

2403641 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 384400 + 2019241 = 620^2 + 1421^2 .

It is a cyclic number.

It is not a de Polignac number, because 2403641 - 2¹⁸ = 2141497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2403691) 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, 65 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (601725).

2^2403641 is an apocalyptic number.

It is an amenable number.

2403641 is a deficient number, since it is larger than the sum of its proper divisors (3259).

2403641 is a wasteful number, since it uses less digits than its factorization.

2403641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2403641 is about 1550.3680208260. The cubic root of 2403641 is about 133.9542615116.

Adding to 2403641 its reverse (1463042), we get a palindrome (3866683).

The spelling of 2403641 in words is "two million, four hundred three thousand, six hundred forty-one".